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

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

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 3⁄7

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

    Solve: 2x - 12 = 8

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Find the mean of: 24, 11, 4

    Answer: 13

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