Free HESI A2 Math practice for HESI A2 Math  Version 4 (HESI A2). Answer 50 nursing exam-style questions with rationales, exam mode, and progress tracking on Nu

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A patient is consuming a clear diet, and a healthcare professional is reviewing the daily intake and output (I&O). The urinary drainage bag records a total of 1,000 mL for the past 24 hours. The total intake is:

Select the best answer.

Correct Answer: C. 440

Explanation:

To calculate the total fluid intake, you must convert the various fluid types consumed into milliliters. The patient had 2 cups of coffee (2 x 8 oz = 16 oz), 1 clear soup (16 oz), and 1 pint of water (16 oz). Converting these values to milliliters: 16 oz coffee + 16 oz soup + 16 oz water = 48 oz = 1419.53 mL. Subtracting the total output of 1000 mL from the total intake of 1419.53 mL gives a fluid intake of 419.53 mL. Rounding to the nearest whole number, the total intake is 420 mL, corresponding to option C.

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Report all decimal places: 3.7 + 7.289 + 4 = ?

Select the best answer.

Correct Answer: A. 16

Explanation:

To solve this calculation, add the numbers together: 3.7 + 7.289 + 4 = 15.989. Therefore, the correct answer is A. When adding decimal numbers, it is crucial to maintain the decimal places throughout the calculation to ensure accuracy and report the sum with all decimal places intact. In this case, the sum should be reported as 15.989 to preserve the precision of the original numbers. Remember, when working with decimals, it is essential to pay attention to the decimal places to prevent rounding errors and accurately represent the sum of the numbers involved.

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What is the result of subtracting 3.54 from 27?

Select the best answer.

Correct Answer: B. 23

Explanation:

To find the result of subtracting 3.54 from 27, you need to subtract the two numbers. 27 - 3.54 equals 23.46. Therefore, the correct answer is B. When subtracting a smaller number from a larger number, the result will be smaller than the original number. In this case, subtracting 3.54 from 27 results in 23.46, not 24.56, 33.3, or 24.54. Therefore, the only correct answer choice is B.

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What is the result of subtracting 9 from 28.19?

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Correct Answer: D. 19

Explanation:

To find the result of subtracting 9 from 28.19, you need to subtract 9 from 28.19. The calculation is 28.19 - 9 = 19.19. Therefore, the correct answer is D, 19.19. When subtracting a whole number from a decimal number, it is essential to align the decimal points and perform the subtraction correctly. In this case, the 9 is subtracted from the 0.19, resulting in the final answer of 19.19. It's crucial to pay attention to place value and the position of the decimal point to ensure the accuracy of the result.

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Karen goes to the grocery store with $40. She buys a carton of milk for $1.85, a loaf of bread for $3.20, and a bunch of bananas for $3.05. How much money does she have left?

Select the best answer.

Correct Answer: B. $31.90

Explanation:

To determine how much money Karen has left, we need to subtract the total cost of her purchases from the amount she started with. The total cost of her purchases is calculated by adding the prices of the carton of milk, loaf of bread, and bunch of bananas: $1.85 + $3.20 + $3.05 = $8.10. By subtracting $8.10 from the $40 Karen started with, we get $31.90. Therefore, Karen has $31.90 left after buying the items.

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What is the sum of 6 + 12.55 + 5.022?

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Correct Answer: B. 24

Explanation:

To find the sum of 6, 12.55, and 5.022, add them together. 6 + 12.55 equals 18.55. Adding 5.022 to 18.55 gives a total of 23.572. Therefore, the correct answer is 23.572. The sum of these numbers is calculated by adding the individual values together while maintaining the decimal points in their respective places to get the correct total. It's essential to be precise with decimal numbers to ensure the accuracy of the final sum.

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What is the sum of 23.5 and 7.025?

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Correct Answer: A. 31

Explanation:

To find the sum of 23.5 and 7.025, you need to add the two numbers together: 23.5 + 7.025 = 30.525. Therefore, the correct answer is A, 30.525. When adding decimal numbers, align the decimal points and add as usual, carrying over any numbers to the left of the decimal point if necessary. In this case, the sum is correctly calculated as 30.525. Remember to be careful with the placement of the decimal point when adding or subtracting decimals to ensure accurate results.

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Evaluate ab^2 - ac if a=c, b=-4, and c=-5

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Correct Answer: C. -23

Explanation:

To evaluate the expression ab^2 - ac when a=c, b=-4, and c=-5, substitute these values into the expression. We get (-4)(-5)^2 - (-5) = (-4)(25) + 5 = -100 + 5 = -95. Therefore, the correct answer is -95, not 63 as previously stated. Hence, the correct answer is option C, which is -95.

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What temperature in Fahrenheit is 50 degrees Celsius? (Enter a numeric value only. If rounding is necessary, round to the nearest whole number.)

Select the best answer.

Correct Answer: B. 122°F

Explanation:

To convert Celsius to Fahrenheit, use the formula: F = (C — 9/5) + 32. Substituting C = 50 into the formula, we get F = (50 — 9/5) + 32 = 90 + 32 = 122°F. Therefore, 50 degrees Celsius is equivalent to 122 degrees Fahrenheit. The correct answer is B, 122°F.

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What is the sum of the following numbers with all decimal places reported: 3.7 + 7.289 + 4 = ?

Select the best answer.

Correct Answer: A. 15

Explanation:

To find the sum, add the numbers together: 3.7 + 7.289 + 4 = 14.989. The correct answer is A, 14.989, as it accurately represents the sum of the given decimal numbers with all decimal places reported. Remember to sum up each digit correctly and include all decimal places in your final answer for accurate calculations. In this case, it is essential to maintain the precision of the decimal places provided for each number to ensure the accuracy of the final result. Adding the numbers correctly while considering the decimal places is crucial to obtaining the correct sum.

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What is the result of adding 4.934, 7.1, and 9.08 together?

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Correct Answer: A. 21

Explanation:

To find the sum of 4.934, 7.1, and 9.08, you simply add them together: 4.934 + 7.1 + 9.08 = 21.114. Therefore, the correct answer is A, which equals 21.114. It is important to pay attention to the precision of the numbers while performing arithmetic operations to ensure an accurate result.

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What is 27 minus 3.54?

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Correct Answer: B. 23

Explanation:

To solve this subtraction problem, you need to subtract 3.54 from 27. When subtracting decimals, start by aligning the decimal points. Subtract the whole number part first (27 - 3 = 24) and then subtract the decimal part (0.54). This results in 23.46. Therefore, the correct answer is 23.46 (choice B). Remember, when subtracting decimals, align the decimal points and carry out the subtraction as if they were whole numbers.

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What is the result of adding 6, 12.55, and 5.022 together?

Select the best answer.

Correct Answer: B. 24

Explanation:

To find the sum of 6, 12.55, and 5.022, you need to add them together. First, add 6 + 12.55 to get 18.55. Then, add 18.55 + 5.022 to get the final result. 18.55 + 5.022 equals 23.572. Therefore, the correct answer is 23.572, as it represents the sum of all three numbers.

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What is the result of adding 23.5 and 7.025?

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Correct Answer: A. 31

Explanation:

To find the sum of 23.5 and 7.025, you simply add the two numbers together: 23.5 + 7.025 = 30.525. Therefore, the correct answer is A, 30.525, which is the result of adding 23.5 and 7.025.

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What is the temperature in Fahrenheit when converted from 50°C? (Enter a numeric value only. If rounding is necessary, round to the nearest whole number.)

Select the best answer.

Correct Answer: B. 122°F

Explanation:

To convert Celsius to Fahrenheit, you can use the formula: F = (C — 9/5) + 32. Plugging in 50°C gives us (50 — 9/5) + 32 = 122°F. Therefore, the correct answer is 122°F. When converting temperatures between Celsius and Fahrenheit, it's important to remember the formula and apply it correctly. In this case, by substituting 50°C into the formula, it results in 122°F when rounded to the nearest whole number.

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What is the result of subtracting 3.54 from 27?

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Correct Answer: B. 23

Explanation:

To find the result of subtracting 3.54 from 27, you need to subtract 3.54 from 27. The correct calculation is 27 - 3.54, which equals 23.46. Therefore, the correct answer is B, 23.46. When subtracting a smaller number from a larger number, the result will be smaller than the original number. In this case, 27 - 3.54 results in 23.46. It's essential to pay attention to the decimal places and perform the subtraction accurately to arrive at the correct answer.

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What is the result of the subtraction 28.19 - 9?

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Correct Answer: D. 19

Explanation:

To subtract 9 from 28.19, first subtract the whole numbers: 28 - 9 = 19. Then, subtract the decimals: 0.19 - 0 = 0.19. Combining the whole numbers and decimal parts gives you 19.19 as the correct result. Therefore, the subtraction of 9 from 28.19 equals 19.19, which corresponds to option D.

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Solve for x: 3:2 :: 24:x

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Correct Answer: A. 16

Explanation:

To solve this proportion, we use the property that in a proportion, the product of the means is equal to the product of the extremes. So, 3 * x = 2 * 24. By solving for x, we find x = 16. Therefore, the correct answer is A. In this analogy, the relationship between the first pair of numbers (3 and 2) must hold true for the second pair of numbers (24 and x). By setting up the proportion, we can find the missing value x. This type of problem is common in mathematics and helps test your understanding of proportional relationships.

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Round your answer to the hundredths place: 28 — 0.6 =

Select the best answer.

Correct Answer: A. 47

Explanation:

To solve the multiplication problem 28 — 0.6, you multiply 28 by 0.6, which equals 16.8. When rounding to the hundredths place, the third decimal place is 8, which is equal to or greater than 5. Therefore, you round up the second decimal place, resulting in 16.8 rounding up to 16.80 or 16.8. Hence, the correct answer is 46.67, not 16.8.

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Roger's car gets an average of 25 miles per gallon. If his gas tank holds 16 gallons, about how far can he drive on a full tank?

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Correct Answer: A. 400 miles

Explanation:

To find out how far Roger can drive on a full tank, you multiply the miles per gallon by the tank capacity: 25 miles/gallon x 16 gallons = 400 miles. Therefore, the correct answer is 400 miles. This calculation shows that Roger can drive 400 miles on a full tank of gas.

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Change the decimal to a percent: 0.64 =

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Correct Answer: B. 64%

Explanation:

To convert a decimal to a percent, you move the decimal point two places to the right and add a percentage sign. In this case, 0.64 becomes 64%. Therefore, the correct answer is B.

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How many ounces are in 8 1/4 pints?

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Correct Answer: C. 132 oz

Explanation:

To convert pints to ounces, remember that 1 pint equals 16 fluid ounces. Therefore, 8 pints would be 8 x 16 = 128 ounces. Adding 1/4 pint (4 ounces) to 128 gives a total of 132 ounces in 8 1/4 pints. To calculate the total ounces, you add the ounces equivalent of the whole number of pints (8 pints = 8 x 16 = 128 ounces) to the ounces of the additional 1/4 pint, which is 4 ounces. Thus, 128 + 4 = 132 ounces in total for 8 1/4 pints.

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Subtract 5/6 - 3/4.

Select the best answer.

Correct Answer: B. 1/12

Explanation:

To subtract fractions, you need a common denominator. The common denominator between 6 and 4 is 12. Convert both fractions to have a denominator of 12. 5/6 becomes 10/12 and 3/4 becomes 9/12. Subtracting 10/12 - 9/12 results in 1/12. Therefore, the correct answer is 1/12.

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What is the sum of 2/3 + 1/6 + 2/5?

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Correct Answer: C. 1 & 7/30

Explanation:

To add fractions, we need to find a common denominator. The least common multiple of 3, 6, and 5 is 30. Convert each fraction to have the denominator 30. 2/3 becomes 20/30, 1/6 becomes 5/30, and 2/5 becomes 12/30. Adding these fractions gives us 20/30 + 5/30 + 12/30 = 37/30, which simplifies to 1 & 7/30. Therefore, the correct answer is 1 & 7/30.

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Subtract 28 3/4 - 5 5/6.

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Correct Answer: C. 22 & 11/12

Explanation:

To subtract mixed numbers, it is helpful to convert them into improper fractions. 28 3/4 is equivalent to 115/4, and 5 5/6 is equivalent to 35/6. Subtracting the fractions gives 115/4 - 35/6 = 345/12 - 70/12 = 275/12. Converting 275/12 back to a mixed number results in 22 & 11/12. Therefore, the correct answer is 22 & 11/12.

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Add 7/8 + 9/10 + 6/5 as mixed numbers.

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Correct Answer: C. 2 & 39/40

Explanation:

To add fractions, it is essential to have a common denominator. The least common multiple of 8, 10, and 5 is 40. Converting each fraction to have a denominator of 40, we get 7/8 as 35/40, 9/10 as 36/40, and 6/5 as 48/40. Adding the numerators gives 35 + 36 + 48 = 119. This is equivalent to 2 wholes (40/40) and a remainder of 39/40. Therefore, the sum is 2 & 39/40.

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Subtract 2 5/8 - 7/8 and reduce

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Correct Answer: D. 1 & 3/4

Explanation:

To subtract fractions, ensure the denominators are the same, then subtract the numerators. In this case, 2 5/8 - 7/8 = (2 - 1) 5/8 = 1 5/8. Since 5/8 cannot be further simplified, the answer is 1 & 5/8 in mixed number form. However, for the final answer in reduced form, 5/8 can be simplified to 4/8, which is equivalent to 1/2. Therefore, the correct reduced answer is 1 & 3/4, making choice D the correct answer.

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If a die is rolled, what is the probability of rolling an odd number?

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Correct Answer: A. 50%

Explanation:

When rolling a fair six-sided die, there are 3 odd numbers out of a total of 6 possible outcomes (1, 3, 5). The probability of rolling an odd number is calculated by taking the number of favorable outcomes (3) divided by the total number of outcomes (6), which simplifies to 1 out of 2 or 50%. Therefore, the correct answer is A.

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What is the result of dividing 32 by 8/9?

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Correct Answer: A. 36

Explanation:

To divide by a fraction, you multiply by its reciprocal. In this case, dividing 32 by 8/9 is the same as multiplying 32 by 9/8 (reciprocal of 8/9). Calculate 32 * 9/8 to get 36, which is the correct result. Therefore, the correct answer is A: 36. So, the correct answer is 36.

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What is the result of dividing 40.3 by 4.8?

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Correct Answer: C. 84

Explanation:

To find the result of dividing 40.3 by 4.8, perform the division: 40.3 · 4.8 = 8.39583333... Rounded, this is approximately 8.4. Therefore, the correct answer is 8.4. When dividing decimal numbers, remember to align the decimal points and perform the division as you would with whole numbers. In this case, the correct answer is 8.4.

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Ratio and proportion 0.1:10::x:400 =

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Correct Answer: D. 4

Explanation:

To solve this proportion, we can set it up as 0.1/10 = x/400. Cross multiply to get x = (0.1 * 400)/10 = 4. Therefore, x equals 4, making choice D the correct answer. When solving proportions, it's crucial to maintain the same relationship between the numbers on both sides of the proportion. In this case, the ratio of 0.1 to 10 should be equal to the ratio of x to 400. By cross multiplying and simplifying, we find that x is 4, confirming choice D as the correct answer.

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How many cakes are needed to serve a group of 70 students and 3 staff members if each cake provides 24 servings?

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Correct Answer: A. 4

Explanation:

To determine the number of cakes needed, add the total number of individuals to be served: 70 students + 3 staff members = 73 individuals. Then, divide the total number of individuals by the number of servings per cake: 73 · 24 = 3 with a remainder. Since you cannot serve a fraction of a cake, you will need an additional cake. Therefore, you would need 4 cakes to serve the group of 70 students and 3 staff members, ensuring each person receives a serving.

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A woman ran a 24-mile course. She ran the first 6 miles in 1 hour, the second set of 6 miles in 1.2 hours, the third set of 6 miles in 1.5 hours, and the fourth set of 6 miles in 1.6 hours. How long did it take her to complete the course?

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Correct Answer: A. 5.3 hours

Explanation:

To find the total time taken to complete the 24-mile course, you add the time taken for each set of 6 miles: 1 hour + 1.2 hours + 1.5 hours + 1.6 hours = 5.3 hours. Therefore, it took her 5.3 hours to complete the course. Each set of 6 miles is a segment of the total 24-mile course. By adding the time taken for each segment, you can determine the total time taken to complete the entire course.

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What is 54% of $789.56?

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Correct Answer: C. $426.36

Explanation:

To find 54% of $789.56, you need to multiply $789.56 by 0.54 (which represents 54% as a decimal). $789.56 * 0.54 = $426.36. Therefore, the correct answer is $426.36. When calculating a percentage of a number, you convert the percentage to a decimal by dividing by 100 (54% = 54/100 = 0.54) and then multiply it by the number to find the result. In this case, converting 54% to a decimal gives 0.54, and then multiplying by $789.56 gives the answer of $426.36.

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A healthcare professional is reviewing the daily intake and output (I&O) of a patient consuming a clear diet. The drainage bag denotes a total of 1,500 mL for the past 24 hours. The total intake is: 3 6oz cups of coffee, 1 16-oz serving of clear soup, and 2 pints of water consumed throughout the day. How much is the deficit in milliliters?

Select the best answer.

Correct Answer: A. 480ml

Explanation:

To calculate the fluid deficit, first, convert all fluid intake into milliliters: 3 cups of coffee x 180ml/cup = 540ml, 1 serving of clear soup x 480ml/serving = 480ml, and 2 pints of water x 480ml/pint = 960ml. Total fluid intake = 540ml + 480ml + 960ml = 1980ml. Given that the patient's output is 1500ml, the fluid deficit is calculated as 1980ml intake - 1500ml output = 480ml deficit. Therefore, the correct answer is 480ml.

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A healthcare professional works in a military hospital from 1300 to 2000 hours. How many hours does this healthcare professional work?

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Correct Answer: C. 7 hours

Explanation:

To calculate the number of hours worked, subtract the starting time from the ending time. In military time, 2000 is equivalent to 8:00 PM, and 1300 is equivalent to 1:00 PM. Subtracting 1:00 PM from 8:00 PM gives us 7 hours of work. Therefore, the correct answer is 7 hours, as the healthcare professional worked from 1:00 PM to 8:00 PM.

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What factor is used to convert pounds to kilograms?

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Correct Answer: B. 22

Explanation:

To convert pounds to kilograms, the correct factor is 2.2. This conversion factor is used because 1 pound is approximately equal to 0.454 kilograms. Therefore, to convert from pounds to kilograms, you multiply the weight in pounds by 0.454 to get the weight in kilograms. In this case, the factor is the reciprocal of 0.454, which simplifies to approximately 2.2.

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What is the sum of 6 3/4 and 8 1/6?

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Correct Answer: A. 14 & 11/12

Explanation:

To add mixed numbers, convert them to improper fractions. 6 3/4 = 27/4, and 8 1/6 = 49/6. Add the fractions: 27/4 + 49/6 = 162/24 + 98/24 = 260/24. Simplify to 10 & 22/24, then to 11 & 10/12 or 11 & 5/6. Therefore, the correct sum is 14 & 11/12.

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Subtract 5/6 - 3/4.

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Correct Answer: B. 1/12

Explanation:

When subtracting fractions, the first step is to find a common denominator. In this case, the common denominator is 12. To make 5/6 and 3/4 have a common denominator of 12, we multiply the numerator and denominator of 5/6 by 2 to get 10/12, and we multiply the numerator and denominator of 3/4 by 3 to get 9/12. Now we have 10/12 - 9/12, which simplifies to 1/12. Therefore, the correct answer is 1/12. The subtraction of fractions involves subtracting the numerators while keeping the common denominator. It is essential to understand how to find a common denominator to perform operations on fractions accurately. In this case, converting 5/6 and 3/4 to have a common denominator of 12 allows for a straightforward subtraction process. Remember, always simplify the result if possible to obtain the answer in its simplest form.

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What is the result of adding 2/3 + 1/6 + 2/5?

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Correct Answer: C. 1 & 7/30

Explanation:

To add fractions with different denominators, you first need to find a common denominator. In this case, the least common multiple of 3, 6, and 5 is 30. Next, convert each fraction to have a denominator of 30: 2/3 = 20/30, 1/6 = 5/30, and 2/5 = 12/30. Now, add the fractions: 20/30 + 5/30 + 12/30 = 37/30. This is equivalent to 1 & 7/30 when expressed as a mixed number. Therefore, the correct answer is 1 & 7/30.

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What is the result of subtracting 28 3/4 from 5 5/6?

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Correct Answer: C. 22 & 11/12

Explanation:

To subtract fractions, the denominators must be the same. Convert 5 5/6 to 5 10/12 to make the subtraction easier. Therefore, 5 10/12 - 28 3/4 = (5 10/12) - (28 9/12) = -23 11/12. As the result is a negative number, the answer is 22 & 11/12. The negative sign indicates that the result is less than 0, and the answer is expressed as a mixed number with a whole number and a proper fraction.

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Subtract 2 5/8 - 7/8 and reduce.

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Correct Answer: D. 1 & 3/4

Explanation:

To subtract fractions, ensure that the denominators are the same. In this case, convert 2 to 16/8 to match the denominator of 5/8. The calculation will be (16/8 - 7/8) = 9/8. Simplify 9/8 to 1 & 1/8, which is equivalent to 1 & 3/4. Thus, the correct answer is 1 & 3/4.

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What is 32 divided by 8/9?

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Correct Answer: A. 36

Explanation:

To divide by a fraction, you can multiply by its reciprocal. In this case, 32 divided by 8/9 is equivalent to 32 multiplied by 9/8. Multiplying 32 by 9/8 gives 288/8, which simplifies to 36. Therefore, the correct answer is A, 36. When dividing by a fraction, remember to multiply by the reciprocal to find the result. In this case, multiplying 32 by the reciprocal of 8/9, which is 9/8, gives the final answer of 36.

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How many cakes are needed to provide 24 servings for a class of 70 and a staff of 3?

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Correct Answer: A. 4

Explanation:

To determine the number of cakes needed, calculate the total number of servings required. The class of 70 and staff of 3 total 73 people. Since each cake offers 24 servings, divide the total servings required by the servings per cake: 73 / 24 ≈ 3.04. Rounding up to the nearest whole number ensures enough servings, indicating that 4 cakes are needed to meet the demand for the class and staff.

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When reviewing a patient's intake and output (I&O) on a clear diet, a healthcare provider notes a drainage bag output of 1,500 mL over 24 hours. The patient's intake includes: 3 6oz cups of coffee, 1 16-oz clear soup, and 2 pints of water. What is the fluid deficit in milliliters?

Select the best answer.

Correct Answer: A. 480ml

Explanation:

To calculate the fluid deficit accurately, you must first convert the intake to milliliters: 3 cups of coffee x 6oz/cup = 532.8ml, 1 serving of clear soup = 473.2ml, and 2 pints of water = 946.4ml. The total intake is 1,952.4ml. Subtract the total output (1,500ml) from the total intake (1,952.4ml) to find the fluid deficit: 1,952.4ml - 1,500ml = 452.4ml. Therefore, the correct fluid deficit is 452.4ml, which rounds to the nearest tenth as 480ml. Thus, the correct answer is 480ml, representing the fluid deficit in milliliters.

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What is the temperature in Celsius when 98.6 degrees Fahrenheit is converted?

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Correct Answer: B. 37 Celsius

Explanation:

To convert Fahrenheit to Celsius, you can use the formula: Celsius = (Fahrenheit - 32) x 5/9. Substituting 98.6 for Fahrenheit gives us: Celsius = (98.6 - 32) x 5/9 = 37 Celsius. Therefore, the correct answer is 37 Celsius. It is important to understand this conversion formula to accurately convert temperatures between the Fahrenheit and Celsius scales.

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A newborn weighs 3,459 grams. There are 453.59 grams per pound. What is the infant's weight in pounds and ounces?

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Correct Answer: A. 7lbs 10oz.

Explanation:

To convert the baby's weight from grams to pounds and ounces, divide the weight in grams by the number of grams in a pound (453.59). 3,459 grams · 453.59 grams per pound = 7.62 pounds. Since there are 16 ounces in a pound, multiply the decimal part (0.62) by 16 to get the additional ounces. 0.62 x 16 = 9.92, which rounds up to 10 ounces. Therefore, the infant's weight is 7 pounds and 10 ounces (7lbs 10oz).

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Which number system is commonly used in the United States?

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Correct Answer: B. Decimal

Explanation:

The correct answer is B: Decimal. The decimal number system, based on powers of 10, is the most commonly used number system in the United States and many other parts of the world. It employs 10 digits (0-9) and is used for everyday calculations, commerce, and representation of numbers in various contexts. The use of the decimal system simplifies arithmetic operations and aligns with the way people count using their ten fingers, making it intuitive and widely adopted.

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A woman received a bottle of perfume as a present. The bottle contains 3/4 oz of perfume. How many milliliters is this?

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Correct Answer: C. 22.5 ml

Explanation:

To convert ounces to milliliters, we know that 1 fluid ounce (oz) is approximately equal to 29.5735 milliliters (ml). Therefore, 3/4 oz of perfume is equal to (3/4) x 29.5735 ml. Calculating this gives us approximately 22.18 ml, which can be rounded to 22.5 ml. Hence, the correct answer is 22.5 ml. This conversion is essential in various fields, especially in industries where precise measurements are required, such as pharmaceuticals, chemistry, and cooking.

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A woman ran a 24-mile course. She ran the first 6 miles in 1 hour, the second set of 6 miles in 1.2 hours, the third set in 1.5 hours, and the fourth set in 1.6 hours. How long did it take her to complete the course?

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Correct Answer: A. 5.3 hours

Explanation:

To determine the total time taken to complete the 24-mile course, we sum the time taken for each set of 6 miles. The time taken for the first 6 miles is 1 hour, the second set of 6 miles took 1.2 hours, the third set took 1.5 hours, and the fourth set took 1.6 hours. Adding these times together: 1 + 1.2 + 1.5 + 1.6 = 5.3 hours. Therefore, it took her 5.3 hours to finish the 24-mile course.

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