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Cornerstone · Grades 3–5 Keystones #1 26 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 26 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 44

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 41, 50, 8, 6, 16, 38, 47, 36

    Answer: 30.25

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