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Cornerstone · Grades 3–5 Keystones #1 6 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 6 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 2⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 73

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 3:1

    Answer: 24 and 8
  5. 5. Statistics Mean

    Calculate the mean of: 44, 23, 32, 12, 38, 34, 28. Give your answer to 2 decimal places

    Answer: 30.14

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