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Cornerstone · Grades 3–5 Keystones #1 10 July 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 July 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 2⁄9

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

    Solve: 2x + 13 = 21

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

    Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 3:2:2

    Answer: 66, 44 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 26, 33, 26, 15, 47, 44, 31. Give your answer to 2 decimal places

    Answer: 31.71

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