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Cornerstone · Grades 3–5 Keystones #1 18 April 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 18 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

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

    Solve: 4x - 14 = 26

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 76 in the ratio 3:1

    Answer: 57 and 19
  5. 5. Statistics Mean

    Find the mean of: 13, 6, 14, 10, 11

    Answer: 10.8

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