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

Five GCSE retrieval questions · 7 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄7

    Answer: 29⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x - 20 = 0

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

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  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: 47, 33, 27, 39, 48, 43, 44

    Answer: 40.1

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