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Cornerstone · Grades 3–5 Keystones #1 27 July 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 July 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 145 + 132

    Answer: 145 + 132 = 277
  2. 2. Algebra

    Factorise: 8x² + 7x

    Answer: x(8x + 7)
  3. 3. Geometry

    Find the area of a circle with radius 5cm

    Answer: 78.54cm²
  4. 4. Ratio

    Simplify the ratio 32:8

    Answer: 4:1
  5. 5. Statistics

    What is the probability of rolling a 6 on a fair die?

    Answer: 1⁄6

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