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Cornerstone · Grades 3–5 Keystones #1 11 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 60

    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 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics Mean

    Find the mean of: 15, 9, 3, 17, 18

    Answer: 12.4

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