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Convert the decimal to a percent: 0.000026 =
- A. 0.00%
- B. 0.03%
- C. 2.60%
- D. 26%
Correct Answer: A
Rationale: To convert a decimal to a percent, you move the decimal point two places to the right and add a percent sign. In this case, 0.000026 becomes 0.00%. Starting with 0.000026, moving the decimal point two places to the right gives you 0.00. Therefore, the correct answer is A, 0.00%.
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A newborn weighs 8 pounds 5 ounces. There are 453.59 grams per pound. What is the infant's weight in grams?
- A. 2268 grams
- B. 3629 grams
- C. 3770 grams
- D. 3856 grams
Correct Answer: C
Rationale: To find the infant's weight in grams, first convert 8 pounds to grams by multiplying 8 pounds by 453.59 grams per pound, which equals 3628.72 grams. Then, convert 5 ounces to grams by multiplying 5 ounces by 28.35 grams per ounce, which equals 141.75 grams. Finally, add these two results together: 3628.72 grams + 141.75 grams = 3770 grams. Therefore, the infant's weight is 3770 grams, making choice C the correct answer.
Round to the nearest whole number: What is 17 out of 68 as a percent?
- A. 17%
- B. 25%
- C. 32%
- D. 68%
Correct Answer: B
Rationale: To convert a fraction to a percentage, divide the numerator (17) by the denominator (68) to get approximately 0.25. Then, multiply this decimal by 100 to get the percentage. 0.25 * 100 = 25%. Since we are asked to round to the nearest whole number percentage, the answer is 25%. Therefore, the correct choice is B, 25%.
Convert 5 3/4 to a decimal. Round to the nearest tenth.
- A. 5.75
- B. 5.7
- C. 6
- D. 5.8
Correct Answer: A
Rationale: To convert the mixed number 5 3/4 to a decimal, divide the numerator by the denominator. In this case, 3 divided by 4 equals 0.75. Therefore, 5 3/4 can be written as 5.75 in decimal form. Rounding 5.75 to the nearest tenth yields 5.8, not 5.7 or 6. Hence, the correct answer is 5.75 since it represents 5 3/4 as a decimal rounded to the nearest tenth.
If a person reads two chapters a day, each with 6 pages, and there are a total of 798 pages, how many days will it take to finish reading?
- A. 133 days
- B. 399 days
- C. 66 1/2 days
- D. 75 1/2 days
Correct Answer: C
Rationale: To determine the number of days required to finish reading the book, divide the total number of pages (798) by the number of pages read per day, which is 2 chapters x 6 pages = 12 pages per day. Therefore, 798 pages · 12 pages per day = 66.5 days. It will take approximately 66 1/2 days to complete reading the book at this pace.
Ratio and Proportion: 100:2 :: 60:X
- A. X = 12
- B. X = 2.2
- C. X = 1.2
- D. X = 1.6
Correct Answer: D
Rationale: To solve for X, set up the proportion: (100/2) = (60/X). Cross-multiply to get 100X = 120. Divide by 100 to isolate X, giving X = 1.2. Therefore, X = 1.6.