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Cornerstone · Grades 3–5 Keystones #1 1 April 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 23

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 1:4

    Answer: 10 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 37, 31, 10, 45, 9, 23

    Answer: 25.8

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