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0580/11 May/Jun 2021, Question 2: Square Roots

Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 4 marks

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The question, in short

Four short arithmetic tasks: a square root, a reciprocal, a fraction of a fraction, and a signed subtraction with brackets.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Part (a) · 1 mark

Find the value of √225.

  1. 115 × 15 = 225, so √225 = 15

Answer15

Part (b) · 1 mark

State the reciprocal of 2/3.

  1. 1Reciprocal of 2/3 = 3/2 = 1 1/2

Answer1 1/2

Part (c) · 1 mark

Calculate three-quarters of one-third.

  1. 13/4 × 1/3 = 3/12 = 1/4

Answer1/4

Part (d) · 1 mark

Evaluate −7 − (6 − 8).

  1. 16 − 8 = −2
  2. 2−7 − (−2) = −7 + 2 = −5

Answer−5

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Also searched as: 0580/11/M/J/21 · 0580_s21_qp_11 · 0580 s21 11 · question 2.
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