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

Five GCSE retrieval questions · 5 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 71

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:1:4

    Answer: 14, 14 and 56
  5. 5. Statistics Mean

    Find the mean of: 18, 14, 5, 9

    Answer: 11.5

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