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Averages and Rounding Practice Questions Flashcards

6 cards from real PARCC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Averages and Rounding Practice Questions flashcards as text

  1. What is the mean of the data set: 14, 22, 8, 30, 16?

    Answer: 18

    Add all values: 14 + 22 + 8 + 30 + 16 = 90. Divide by the number of values (5): 90 ÷ 5 = 18.

  2. A student scored 82, 76, 91, and 85 on four tests. What score does the student need on a fifth test to achieve an average of 85?

    Answer: 91

    The desired total for 5 tests at an average of 85 is 5 × 85 = 425. Current total: 82 + 76 + 91 + 85 = 334. Needed: 425 − 334 = 91.

  3. Round 3.8472 to the nearest hundredth.

    Answer: 3.85

    The hundredths digit is 4. The digit to the right (thousandths place) is 7, which is ≥ 5, so round up: 3.85.

  4. The temperatures for five days were: 68°F, 74°F, 71°F, 69°F, and 73°F. What is the mean temperature, rounded to the nearest whole number?

    Answer: 71°F

    Sum: 68 + 74 + 71 + 69 + 73 = 355. Mean: 355 ÷ 5 = 71. The mean temperature is 71°F.

  5. Which number, when rounded to the nearest ten, gives 250?

    Answer: 245

    Numbers from 245 to 254 round to 250 when rounded to the nearest ten. 245 is within this range and rounds up to 250.

  6. A store sells three items priced at $12.47, $8.95, and $15.63. What is the average price, rounded to the nearest cent?

    Answer: $12.35

    Sum: $12.47 + $8.95 + $15.63 = $37.05. Mean: $37.05 ÷ 3 = $12.35.