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Cornerstone · Grades 3–5 Keystones #1 15 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 5⁄12

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

    Solve: 6x - 16 = 32

    Answer: x = 8
  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

    Divide 182 in the ratio 1:2:4

    Answer: 26, 52 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 11, 33, 13, 19, 19, 41, 9

    Answer: 20.7

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