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Cornerstone · Grades 3–5 Keystones #1 2 April 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 6, 45, 20, 15, 34, 8, 7, 6. Give your answer to 2 decimal places

    Answer: 17.63

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