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Cornerstone · Grades 3–5 Keystones #1 18 October 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 18 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄6

    Answer: 19⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x - 17 = 5

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 95 in the ratio 1:2:2

    Answer: 19, 38 and 38
  5. 5. Statistics Mean

    Find the mean of: 11, 20, 6, 3

    Answer: 10

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