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How many millimeters (mm) are in 3.45 meters?
- A. 345 mm
- B. 3,450 mm
- C. 345,000 mm
- D. 3.45 mm
Correct Answer: B
Rationale: To convert meters to millimeters, you need to multiply by 1,000 because there are 1,000 millimeters in a meter. Therefore, 3.45 meters 1,000 = 3,450 millimeters. Choices A, C, and D are incorrect because they do not reflect the correct conversion factor from meters to millimeters.
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Convert 0.29 pounds to ounces.
- A. 2.9 ounces
- B. 4.64 ounces
- C. 29 ounces
- D. 46.4 ounces
Correct Answer: B
Rationale: To convert pounds to ounces, you need to know that there are 16 ounces in a pound. Multiplying 0.29 pounds by 16 gives you 4.64 ounces. Therefore, the correct answer is B. Choice A (2.9 ounces) is incorrect as it doesn't consider the conversion factor of 16 ounces per pound. Choice C (29 ounces) and Choice D (46.4 ounces) are incorrect because they incorrectly interpret the conversion from pounds to ounces.
Convert 0.0345 kilograms to grams (g).
- A. 3.45 grams
- B. 34.5 grams
- C. 345 grams
- D. 3450 grams
Correct Answer: B
Rationale: To convert kilograms to grams, you need to multiply by 1,000 since 1 kilogram is equal to 1,000 grams. Therefore, 0.0345 kg multiplied by 1,000 equals 34.5 grams. Choices A, C, and D are incorrect because they do not correctly convert kilograms to grams. A states 3.45 grams, which is off by a factor of 10. C and D overestimate the conversion by considering the decimal point in the original value as a whole number. Hence, the correct answer is B, 34.5 grams.
What is 0.4 divided by 40?
- A. 1/100
- B. 1/1000
- C. 1/400
- D. 1/40000
Correct Answer: B
Rationale: The calculation of 0.4 divided by 40 results in 0.01, which can be expressed as 1/100. This fraction is the correct representation of the division of 0.4 by 40. Choice A, 1/100, is the correct answer as it accurately reflects the division. Choices C and D, 1/400 and 1/40000 respectively, do not correctly represent the division operation performed on 0.4 and 40, leading to incorrect results and are therefore not the correct answers.
How many milliliters are in 2 liters?
- A. 20 mL
- B. 200 mL
- C. 2,000 mL
- D. 20,000 mL
Correct Answer: C
Rationale: To convert liters to milliliters, you need to multiply the number of liters by 1,000 since there are 1,000 milliliters in 1 liter. Therefore, 2 liters x 1,000 = 2,000 milliliters. Choices A, B, and D are incorrect because they do not account for the correct conversion factor from liters to milliliters.
How many millimeters are in 5 centimeters?
- A. 50 mm
- B. 500 mm
- C. 5 mm
- D. 500 cm
Correct Answer: B
Rationale: To convert centimeters to millimeters, you multiply by 10 since there are 10 millimeters in a centimeter. Therefore, 5 centimeters x 10 = 50 millimeters, making choice A the correct answer. Choice C, '5 mm,' is incorrect as it represents the original quantity in millimeters. Choice D, '500 cm,' is incorrect as it converts the centimeters to centimeters instead of millimeters.