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Cornerstone · Grades 3–5 Keystones #1 24 March 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 24 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 2⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 30

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

    Calculate the hypotenuse when a = 9cm and b = 4cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Divide 224 in the ratio 1:1:2

    Answer: 56, 56 and 112
  5. 5. Statistics Mean

    Find the mean of: 8, 8, 10, 17

    Answer: 10.75

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