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Cornerstone · Grades 3–5 Keystones #1 13 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 5⁄6

    Answer: 53⁄42
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 61

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

    Calculate the hypotenuse when a = 12cm and b = 11cm

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 1:3:2

    Answer: 24, 72 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 26, 10, 17, 40, 33, 44, 28, 35

    Answer: 29.1

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