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Cornerstone · Grades 3–5 Keystones #1 11 March 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 3⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 71

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  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: 11, 24, 22, 13, 50, 9

    Answer: 21.5

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