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

Five GCSE retrieval questions · 1 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 71

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 11cm

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 34, 15, 6, 37, 5, 45

    Answer: 23.7

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