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Cornerstone · Grades 3–5 Keystones #1 25 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 25 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

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

    Solve: 3x + 9 = 33

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

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 1:4:2

    Answer: 21, 84 and 42
  5. 5. Statistics Mean

    Find the mean of: 17, 15, 9, 10, 9

    Answer: 12

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