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Cornerstone · Grades 3–5 Keystones #1 23 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 4⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 73

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 3:3:1

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

    Calculate the mean of: 41, 49, 23, 36, 19, 41, 9, 19

    Answer: 29.6

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