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Cornerstone · Grades 3–5 Keystones #1 19 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 1⁄4

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

    Solve: 7x + 5 = 33

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Share 78 in the ratio 1:2

    Answer: 26 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 32, 20, 20, 15, 23, 6, 30

    Answer: 20.9

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