Rounding, Estimation & Bounds

Rounding, Estimation & Bounds Quiz

Spec E1.9–10 · Cambridge IGCSE Maths: Quiz

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5 questions, one answer each

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  1. 1. Round 8.657 to 2 decimal places.

    • A. 8.65
    • B. 8.66
    • C. 8.7
    • D. 8.60

  2. 2. Estimate 39.2 x 5.1 by rounding each value to 1 significant figure.

    • A. 150
    • B. 160
    • C. 200
    • D. 400

  3. 3. A length is recorded as 8 cm to the nearest cm. What is the lower bound?

    • A. 7 cm
    • B. 7.5 cm
    • C. 8 cm
    • D. 8.5 cm

  4. 4. 120 people need transport in minibuses that seat 16 people each. How many minibuses are needed?

    • A. 7
    • B. 7.5
    • C. 8
    • D. 9

  5. 5. A rectangle has length 10 cm and width 6 cm, both measured to the nearest cm. What is the maximum possible area, using bounds correctly?

    • A. 60 cm²
    • B. 62.5 cm²
    • C. 65.25 cm²
    • D. 67.5 cm²

Quiz