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Cornerstone · Grades 3–5 Keystones #1 13 April 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 13 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄8

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 49

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

    Calculate the hypotenuse when a = 3cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 10, 49, 15, 33, 44, 13, 7. Give your answer to 2 decimal places

    Answer: 24.43

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