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Cornerstone · Grades 3–5 Keystones #1 26 October 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 26 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 39

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics Mean

    Find the mean of: 2, 5, 5, 10, 19

    Answer: 8.2

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