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Cornerstone · Grades 3–5 Keystones #1 22 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 22 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 18

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 78 in the ratio 2:1:3

    Answer: 26, 13 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 39, 29, 46, 18, 49, 6, 14. Give your answer to 2 decimal places

    Answer: 28.71

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