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Cornerstone · Grades 3–5 Keystones #1 12 February 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 February 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 6⁄7

    Answer: 45⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 10 = 52

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 36, 27, 12, 36, 19, 10, 33

    Answer: 24.7

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