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Cornerstone · Grades 3–5 Keystones #1 26 September 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 26 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 3⁄8

    Answer: 29⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 12

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:2:1

    Answer: 24, 48 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 6, 48, 42, 12, 8, 40, 25, 47

    Answer: 28.5

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