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Cornerstone · Grades 3–5 Keystones #1 18 January 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄8

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

    Solve: 6x - 5 = 61

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

    Calculate the hypotenuse when a = 4cm and b = 7cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 1:3:1

    Answer: 22, 66 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 36, 35, 49, 10, 8, 50, 31, 41

    Answer: 32.5

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