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Cornerstone · Grades 3–5 Keystones #1 30 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 32

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  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: 32, 43, 41, 27, 15, 29, 18. Give your answer to 2 decimal places

    Answer: 29.29

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