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Cornerstone · Grades 3–5 Keystones #1 16 April 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 22

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

    Calculate the hypotenuse when a = 4cm and b = 14cm

    Answer: 14.56cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 3:1

    Answer: 48 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 32, 41, 45, 40, 22, 21, 22, 32

    Answer: 31.9

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