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Cornerstone · Grades 3–5 Keystones #1 29 April 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 3⁄5

    Answer: 41⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 24

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

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 3:1:4

    Answer: 69, 23 and 92
  5. 5. Statistics Mean

    Find the mean of: 15, 14, 13

    Answer: 14

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