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

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

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄6

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

    Solve: 2x + 7 = 17

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 2:1:4

    Answer: 26, 13 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 36, 23, 47, 18, 46, 32

    Answer: 33.7

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