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Cornerstone · Grades 3–5 Keystones #1 27 September 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 27 September 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 5⁄8

    Answer: 75⁄56
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 17

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

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 1:4

    Answer: 8 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 17, 24, 31, 6, 49, 22. Give your answer to 2 decimal places

    Answer: 24.83

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