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Cornerstone · Grades 3–5 Keystones #1 22 June 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 19

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:3

    Answer: 15 and 45
  5. 5. Statistics Mean

    Find the mean of: 19, 19, 2, 7, 20

    Answer: 13.4

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