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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 determines whether \$50 covers items costing \$18.95, \$12.49, and \$21.30?

    Answer: 19 + 12 + 21 = 52, more than 50

    The estimate of \$52 exceeds \$50, so \$50 is not quite enough.

  2. Estimate 588 × 31 by rounding both factors.

    Answer: 18,000

    600 × 30 equals 18,000.

  3. A measurement of 6.49 cm is rounded to the nearest tenth. What is the result?

    Answer: 6.5 cm

    The hundredths digit 9 rounds 6.49 up to 6.5.

  4. Which estimation strategy uses compatible numbers?

    Answer: Changing 246 ÷ 5 to 250 ÷ 5

    Compatible numbers replace 246 with 250 so it divides evenly by 5.

  5. About how long is a 287-mile trip at about 58 miles per hour?

    Answer: About 5 hours

    300 ÷ 60 is about 5 hours.

  6. Estimating 9.8 × 9.7 by clustering gives which product?

    Answer: 100

    Both factors cluster near 10, so 10 × 10 = 100.

  7. Which estimate tells you about how many \$4 tickets you can buy with \$37?

    Answer: About 9 tickets

    40 ÷ 4 is 10, and 37 ÷ 4 is just over 9 tickets.