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Cornerstone · Grades 3–5 Keystones #1 27 June 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

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

    Solve: 5x - 8 = 37

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Share 49 in the ratio 3:4

    Answer: 21 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 25, 5, 5, 14, 19, 49

    Answer: 19.5

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