Nokea
Add: 0.824 + 1.197 =
- A. 1.911
- B. 1.921
- C. 2.011
- D. 2.021
Correct Answer: B
Rationale: Correct Answer: B (1.921)
Rationale:
Step 1: Align the numbers vertically.
0.824
+ 1.197
Step 2: Add the numbers starting from the rightmost column.
0.824
+ 1.197
1.921
Step 3: The sum is 1.921.
Summary:
- A (1.911): Incorrect, as the correct sum is 1.921.
- C (2.011) and D (2.021): Incorrect, as the sum exceeds the sum of the two given numbers.
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Multiply: 3 2/11 x 2 1/5, reduced to lowest terms =
- A. 5 3/16
- B. 6 2/55
- C. 385/55
- D. 7
Correct Answer: D
Rationale: To multiply mixed numbers, convert them to improper fractions. 3 2/11 = 35/11, 2 1/5 = 11/5. Multiply: (35/11) x (11/5) = 385/55. Simplify to lowest terms = 7, hence the correct answer is D. Choices A, B, and C are incorrect as they do not properly convert and multiply the mixed numbers.
A mailman delivers mail to 540 households. Yesterday he delivered a total of 5,400 pieces of mail on his route. What was the average number of pieces he delivered to each household? (Enter numeric value only. Round to whole number.)
- A. 10
- B. 12
- C. 14
- D. 8
Correct Answer: D
Rationale: Correct Answer: D (8)
Rationale:
1. Total pieces delivered = 5,400
2. Number of households = 540
3. Average pieces per household = Total pieces delivered / Number of households
4. Average = 5,400 / 540 = 10
5. Therefore, the average pieces delivered per household is 10, so choice D (8) is the correct answer.
Summary:
A: 10 - Incorrect. This is the calculated average, not the answer.
B: 12 - Incorrect. This is not the correct average based on the given information.
C: 14 - Incorrect. This is not the correct average based on the given information.
How many milliliters are contained in 3 liters of fluid? (Enter numeric value only.)
- A. 300
- B. 3000
- C. 30,000
- D. 300,000
Correct Answer: B
Rationale: Correct Answer: B (3000)
Rationale:
1 liter = 1000 milliliters.
Therefore, 3 liters = 3 x 1000 = 3000 milliliters.
Choice B (3000) is correct because it correctly converts liters to milliliters.
Choice A (300) is incorrect as it is the equivalent of 0.3 liters.
Choice C (30,000) and D (300,000) are incorrect as they are the result of multiplying by 10 or 100 extra.
What is 3 percent of 60?
- A. 0.18
- B. 1.8
- C. 18
- D. 0.018
Correct Answer: B
Rationale: To find 3% of 60, you multiply 60 by 3% (or 0.03).
So, 60 x 0.03 = 1.8.
Therefore, the correct answer is B: 1.8.
Choice A (0.18) is incorrect as it represents 0.3% of 60. Choice C (18) is incorrect as it represents 30% of 60. Choice D (0.018) is incorrect as it represents 0.03% of 60.
Calculate the product: (7.2)(0.34) =
- A. 14.12
- B. 0.234
- C. 7.64
- D. 2.448
Correct Answer: D
Rationale: When multiplying decimals, treat the numbers as whole numbers and then position the decimal point in the product so that it has the same total number of decimal places as the numbers being multiplied. In this case, multiplying 7.2 by 0.34 results in 2.448.