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Cornerstone · Grades 3–5 Keystones #1 2 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 7 = 49

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 7, 8, 11, 27, 12, 18, 36, 10. Give your answer to 2 decimal places

    Answer: 16.13

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