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

Five GCSE retrieval questions · 1 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 11

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 66 in the ratio 3:2:1

    Answer: 33, 22 and 11
  5. 5. Statistics Mean

    Find the mean of: 15, 14, 5, 13, 18

    Answer: 13

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