Rounding and Estimation

Rounding and Estimation Quiz

Spec N14–N16 · AQA GCSE Maths: Quiz

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5 questions, one answer each

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  1. 1. Round 7.4862 to 2 decimal places.

    • A. 7.49
    • B. 7.48
    • C. 7.50
    • D. 7.486

  2. 2. Estimate the answer to 8.7 × 4.9 by rounding each number to 1 significant figure first.

    • A. 45
    • B. 40
    • C. 35
    • D. 50

  3. 3. A length is measured as 12 cm to the nearest centimetre. Which inequality represents the error interval?

    • A. 12 ≤ x < 13
    • B. 11.5 ≤ x < 12.5
    • C. 11 < x < 13
    • D. 11.5 < x ≤ 12.5

  4. 4. A mass is recorded as 45 kg to 2 significant figures. What is the lower bound for this measurement?

    • A. 44 kg
    • B. 44.5 kg
    • C. 45.5 kg
    • D. 46 kg

  5. 5. A rectangular field has length 120 m and width 85 m, both measured to the nearest metre. Calculate the maximum possible area of the field.

    • A. 10200 m²
    • B. 10335 m²
    • C. 10440 m²
    • D. 10575 m²

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