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Cornerstone · Grades 3–5 Keystones #1 22 October 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 October 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄7

    Answer: 29⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x - 13 = 15

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm

    Answer: 13.04cm
  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: 7, 40, 37, 49, 22, 13, 7

    Answer: 25

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