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Cornerstone · Grades 3–5 Keystones #1 7 July 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 7 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 52

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 3:2

    Answer: 42 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 34, 49, 41, 39, 36, 30, 9, 18

    Answer: 32

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