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Cornerstone · Grades 3–5 Keystones #1 26 April 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 28

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 15cm

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Divide 290 in the ratio 1:2:2

    Answer: 58, 116 and 116
  5. 5. Statistics Mean

    Find the mean of: 10, 16, 20, 14, 18

    Answer: 15.6

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