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Cornerstone · Grades 3–5 Keystones #1 9 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 9 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 43

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:4

    Answer: 18 and 72
  5. 5. Statistics Mean

    Find the mean of: 7, 13, 16, 16

    Answer: 13

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