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Cornerstone · Grades 3–5 Keystones #1 12 July 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄7

    Answer: 11⁄14
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 25

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 2:2:1

    Answer: 54, 54 and 27
  5. 5. Statistics Mean

    Find the mean of: 20, 2, 16, 18

    Answer: 14

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