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

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

  1. 1. Number Adding fractions

    Add: 2⁄6 + 4⁄5

    Answer: 17⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x - 10 = 12

    Answer: x = 11
  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 1:3

    Answer: 10 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 43, 18, 24, 26, 24, 11, 14

    Answer: 22.9

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