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Cornerstone · Grades 3–5 Keystones #1 20 May 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 20 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 9 = 31

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

    Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 64 in the ratio 1:1:2

    Answer: 16, 16 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 46, 49, 21, 11, 27, 25. Give your answer to 2 decimal places

    Answer: 29.83

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