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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. Which is the best estimate for 48 × 19?

    Answer: 1,000

    Rounding 48 to 50 and 19 to 20 gives 50 × 20 = 1,000.

  2. What is the best estimate for 897 ÷ 29?

    Answer: 30

    Rounding 897 to 900 and 29 to 30 gives 900 ÷ 30 = 30.

  3. Approximately what is 18% of 550?

    Answer: 100

    18% is close to 20%, and 20% of 550 = 110, so the best estimate is about 100.

  4. Approximately how much is 2,489 + 3,512?

    Answer: 6,000

    Rounding to 2,500 + 3,500 = 6,000.

  5. Which whole number is closest to the square root of 50?

    Answer: 7

    Since 7² = 49 and 8² = 64, the square root of 50 is closest to 7.

  6. A store sold 312 items at roughly $9.95 each. What is the best estimate of total sales?

    Answer: $3,000

    Rounding 312 to 300 and $9.95 to $10 gives 300 × $10 = $3,000.