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Cornerstone · Grades 3–5 Keystones #1 9 August 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 August 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄5

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

    Solve: 2x - 12 = 12

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 119 in the ratio 3:4

    Answer: 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 47, 48, 44, 44, 45, 12, 10

    Answer: 35.7

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