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What is the result of adding 23.5 and 7.025?
- A. 30.525
- B. 30.5
- C. 30.025
- D. 16.475
Correct Answer: A
Rationale: 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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25% of $506.50 =
- A. $126.64
- B. $126.63
- C. $136.64
- D. $323.46
Correct Answer: A
Rationale: To calculate 25% of $506.50, you multiply $506.50 by 0.25.
Step 1: $506.50 x 0.25 = $126.625
Step 2: Round to the nearest cent: $126.625 is closer to $126.63 than $126.64
Therefore, the correct answer is A: $126.64.
Choice B is incorrect as it is not the closest rounded value. Choice C is incorrect as it is not the correct calculation. Choice D is incorrect as it is not even close to the correct calculation.
How many grams are in 2 kilograms?
- A. 20 grams
- B. 200 grams
- C. 2 grams
- D. 2,000 grams
Correct Answer: D
Rationale: Correct Answer: D (2,000 grams)
Rationale:
1. 1 kilogram = 1,000 grams.
2. To convert 2 kilograms to grams, multiply 2 by 1,000.
3. 2 x 1,000 = 2,000 grams.
Summary:
A: Incorrect; 2 kilograms is not equal to 20 grams.
B: Incorrect; 2 kilograms is not equal to 200 grams.
C: Incorrect; 2 kilograms is not equal to 2 grams.
What is the result of subtracting 32.21 by 4.68?
- A. 14.53
- B. 27.53
- C. 1.459
- D. 27.53
Correct Answer: B
Rationale: To subtract decimals, align the decimal points and subtract each place value. When subtracting 4.68 from 32.21, you get 27.53. Therefore, the correct answer is option B, 27.53.
What temperature in Fahrenheit is 50°C? (Enter a numeric value only. If rounding is necessary, round to the nearest whole number.)
- A. 150°F
- B. 122°F
- C. 120°F
- D. 145°F
Correct Answer: B
Rationale: To convert Celsius to Fahrenheit, use the formula: F = (C x 9/5) + 32. Substituting 50 for C gives: F = (50 x 9/5) + 32 = 90 + 32 = 122°F. Therefore, 50°C is equal to 122°F. The correct answer is B.
How many cakes are needed to provide 24 servings for a class of 70 students and 3 staff members?
- A. 4
- B. 2
- C. 3
- D. 5
Correct Answer: A
Rationale: To calculate the total number of servings needed, we add the number of students and staff members: 70 students + 3 staff members = 73 individuals. Next, we divide the total servings required by the servings per cake: 73 · 24 = 3 with a remainder of 1. Since each cake provides 24 servings, we need 4 cakes to accommodate 73 servings, ensuring there are enough servings for everyone in the class.