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Cornerstone · Grades 3–5 Keystones #1 13 March 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 13 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 43

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

    Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.55cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics Mean

    Find the mean of: 10, 16, 8, 11, 15

    Answer: 12

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