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Cornerstone · Grades 3–5 Keystones #1 27 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 27 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = 1

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 85 in the ratio 2:2:1

    Answer: 34, 34 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 37, 25, 34, 6, 39, 18

    Answer: 26.5

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