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Cornerstone · Grades 3–5 Keystones #1 13 April 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 5⁄7

    Answer: 27⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 32

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 5cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 1:2:3

    Answer: 12, 24 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 7, 14, 49, 6, 28, 14, 22

    Answer: 20

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