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Cornerstone · Grades 3–5 Keystones #1 26 October 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄8

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

    Solve: 7x + 3 = 66

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

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:1:4

    Answer: 14, 14 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 47, 44, 11, 45, 23, 43, 43. Give your answer to 2 decimal places

    Answer: 36.57

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