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

Five GCSE retrieval questions · 1 April 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 6⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 17

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

    Calculate the hypotenuse when a = 8cm and b = 8cm

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 3:2

    Answer: 30 and 20
  5. 5. Statistics Mean

    Find the mean of: 7, 2, 7, 15, 15

    Answer: 9.2

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