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Numerical Estimation and Approximation Flashcards

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

Read the first 6 Numerical Estimation and Approximation flashcards as text

  1. Round 3,847 to the nearest hundred.

    Answer: 3,800

    The digit in the tens place is 4, which is less than 5, so round down to 3,800.

  2. Which is a reasonable estimate for 22 × 48?

    Answer: 1,000

    Rounding 22 to 20 and 48 to 50 gives 20 × 50 = 1,000.

  3. Estimate how many groups of 15 fit into 200.

    Answer: 13

    200 ÷ 15 ≈ 13.3, so approximately 13 groups fit.

  4. If you drive 55 mph for 3.5 hours, approximately how far do you travel?

    Answer: 200 miles

    55 × 3.5 = 192.5 miles, which rounds to approximately 200 miles.

  5. About how much is 5.8 + 4.3 + 6.1?

    Answer: 16

    5.8 + 4.3 + 6.1 = 16.2, which is closest to 16.

  6. A recipe calls for 2.75 cups of flour. If you triple the recipe, approximately how much flour do you need?

    Answer: 8 cups

    2.75 × 3 = 8.25 cups, which is closest to 8 cups.