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Cornerstone · Grades 3–5 Keystones #1 19 June 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄4

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

    Solve: 4x - 5 = 35

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 41, 25, 24, 24, 5, 39, 7

    Answer: 23.6

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