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

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

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

    Solve: 5x - 15 = 60

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.54cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 4:1:3

    Answer: 56, 14 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 30, 8, 43, 42, 28, 13. Give your answer to 2 decimal places

    Answer: 27.33

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