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Cornerstone · Grades 3–5 Keystones #1 30 July 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 30 July 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 74

    Answer: x = 12
  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 216 in the ratio 1:1:2

    Answer: 54, 54 and 108
  5. 5. Statistics Mean

    Find the mean of: 21, 8, 10

    Answer: 13

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