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Subtract: 32.21 - 4.68 =
- A. 14.53
- B. 27.53
- C. 1.459
- D. 27.53
Correct Answer: D
Rationale: To subtract decimals, align the decimal points and subtract each place value. Starting from the right, 1 - 8 requires borrowing from the tens place, resulting in 11 - 8 = 3. Then, 2 - 6 requires borrowing from the tens place again, resulting in 12 - 6 = 6. The result is 27.53. Therefore, the correct answer is 27.53 (Option D). Remember to be careful with decimal alignment and borrowing when subtracting decimals.
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How many pints are in 80 ounces?
- A. 1,280 pints
- B. 16 pints
- C. 15 pints
- D. 5 pints
Correct Answer: D
Rationale: To determine how many pints are in 80 ounces, we use the conversion that 1 pint is equal to 16 ounces. Therefore, 80 ounces divided by 16 ounces per pint equals 5 pints (80/16 = 5). Choice D, 5 pints, is the correct answer. Choice A is incorrect as it miscalculates by multiplying 80 by 16 instead of dividing. Choices B and C are incorrect as they do not use the correct conversion factor of 16 ounces per pint. Thus, the correct answer is D, 5 pints, as it accurately applies the conversion factor to solve the problem.
What is the result of adding 4.934, 7.1, and 9.08 together?
- A. 21.114
- B. 21.042
- C. 20.214
- D. 59.13
Correct Answer: A
Rationale: 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.
What is the result of multiplying 375 by 2.3?
- A. 862.5
- B. 750
- C. 225.75
- D. 1125
Correct Answer: A
Rationale: To find the result of multiplying 375 by 2.3, you need to multiply the two numbers together. Multiplying 375 by 2.3 is calculated as 375 x 2.3 = 862.5. Therefore, the correct answer is A, which is 862.5.
How many liters are in 300 milliliters?
- A. 0.3 liters
- B. 3 liters
- C. 0.03 liters
- D. 3.30 liters
Correct Answer: A
Rationale: To convert milliliters to liters, divide by 1000 because 1 liter is equal to 1000 milliliters. Therefore, 300 milliliters is equal to 0.3 liters (300 · 1000 = 0.3). The correct answer is 0.3 liters, as 300 milliliters is a fraction of a liter, not a whole liter.
Change the fraction to the simplest possible ratio: 8/14
- A. 2:4
- B. 4:7
- C. 4:6
- D. 3:5
Correct Answer: B
Rationale: To simplify the fraction 8/14, you need to divide both the numerator and denominator by their greatest common factor, which in this case is 2. Dividing both 8 and 14 by 2 results in 4/7, which is the simplest ratio for 8/14. Therefore, the correct answer is 4:7. Remember, when simplifying fractions, always divide both the numerator and denominator by their greatest common factor to represent the fraction in its simplest form.