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Cornerstone · Grades 3–5 Keystones #1 27 April 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 4⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 6 = 18

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:2:3

    Answer: 10, 20 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 11, 15, 50, 14, 50, 19, 14

    Answer: 24.7

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