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Cornerstone · Grades 3–5 Keystones #1 10 September 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 10 September 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x + 10 = 34

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 19, 38, 44, 34, 50, 26. Give your answer to 2 decimal places

    Answer: 35.17

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