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Cornerstone · Grades 3–5 Keystones #1 16 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 5⁄8

    Answer: 67⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 72

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

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 77 in the ratio 3:2:2

    Answer: 33, 22 and 22
  5. 5. Statistics Mean

    Find the mean of: 19, 13, 12, 8, 18

    Answer: 14

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