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Cornerstone · Grades 3–5 Keystones #1 15 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

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

    Solve: 4x + 5 = 49

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

    Calculate the hypotenuse when a = 9cm and b = 15cm

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 4:1

    Answer: 20 and 5
  5. 5. Statistics Mean

    Find the mean of: 20, 11, 3

    Answer: 11.333333333333

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