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Cornerstone · Grades 3–5 Keystones #1 2 January 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x - 17 = 32

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

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 95 in the ratio 2:1:2

    Answer: 38, 19 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 49, 15, 42, 25, 32, 40, 38. Give your answer to 2 decimal places

    Answer: 34.43

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