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Cornerstone · Grades 3–5 Keystones #1 30 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 3⁄4

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 74

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

    Calculate the hypotenuse when a = 10cm and b = 4cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 48, 8, 9, 31, 40, 21

    Answer: 26.2

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