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Cornerstone · Grades 3–5 Keystones #1 25 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄8

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 3x + 11 = 47

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 5cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Share 78 in the ratio 2:1

    Answer: 52 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 32, 26, 16, 49, 48, 49, 22, 49

    Answer: 36.4

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