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

  1. 1. Number Adding fractions

    Add: 3⁄7 + 3⁄8

    Answer: 45⁄56
  2. 2. Algebra Two-step equations

    Solve: 4x - 18 = 22

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 1:3:3

    Answer: 22, 66 and 66
  5. 5. Statistics Mean

    Find the mean of: 8, 8, 11, 1

    Answer: 7

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