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

Five GCSE retrieval questions · 7 June 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄3

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 8 = 76

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 6cm

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 1:4:1

    Answer: 12, 48 and 12
  5. 5. Statistics Mean

    Find the mean of: 18, 12, 6, 5

    Answer: 10.25

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