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

Five GCSE retrieval questions · 3 March 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄8

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 60

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 14cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics Mean

    Find the mean of: 6, 4, 18, 2, 2

    Answer: 6.4

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