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Cornerstone · Grades 3–5 Keystones #1 14 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄7

    Answer: 33⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x + 15 = 87

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 14, 12, 6, 7, 12

    Answer: 10.2

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