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Cornerstone · Grades 3–5 Keystones #1 8 June 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄3

    Answer: 29⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 26

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:1:2

    Answer: 42, 42 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 27, 17, 14, 47, 11, 24, 20, 22

    Answer: 22.8

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