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Cornerstone · Grades 3–5 Keystones #1 27 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x - 14 = 12

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 35, 25, 14, 19, 48, 15, 47, 21

    Answer: 28

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