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Estimation Sequence Flashcards

7 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 7 Estimation Sequence flashcards as text

  1. Which estimate best checks whether 612 + 389 = 1,001 is reasonable?

    Answer: 600 + 400 = 1,000

    Rounding to 600 + 400 = 1,000 confirms the answer is reasonable.

  2. A jar has between 280 and 320 marbles. Which single estimate is most appropriate?

    Answer: About 300

    300 sits in the middle of the given range.

  3. Estimate the sum 12.7 + 8.4 + 19.1 by rounding to the nearest whole number.

    Answer: 40

    13 + 8 + 19 equals 40.

  4. Which problem requires an EXACT answer rather than an estimate?

    Answer: Counting change owed to a customer

    Giving exact change requires a precise calculation, not an estimate.

  5. Estimate 19% of 51 using benchmarks.

    Answer: About 10

    20% of 50 is 10, a close benchmark estimate.

  6. Rounding 7,649 to the nearest thousand gives which value?

    Answer: 8,000

    The hundreds digit 6 rounds 7,649 up to 8,000.

  7. A recipe for 4 serves needs 3 cups of flour. About how much flour is needed for 11 serves?

    Answer: About 8 cups

    About 0.75 cup per serving times 11 is roughly 8 cups.