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Cornerstone · Grades 3–5 Keystones #1 17 July 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 17 July 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄12 + 7⁄12

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

    Solve: 2x + 10 = 32

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 2:1

    Answer: 22 and 11
  5. 5. Statistics Mean

    Find the mean of: 9, 14, 13, 2, 7

    Answer: 9

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