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Cornerstone · Grades 3–5 Keystones #1 10 November 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄8

    Answer: 47⁄56
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 85

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 10cm

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

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 32, 34, 39, 45, 17, 7

    Answer: 29

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