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Cornerstone · Grades 3–5 Keystones #1 9 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 6⁄7

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x - 9 = 33

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 1:2

    Answer: 9 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 7, 46, 49, 43, 5, 20, 27, 15

    Answer: 26.5

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