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Cornerstone · Grades 3–5 Keystones #1 19 October 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 19 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

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

    Solve: 2x + 11 = 35

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 1:3:3

    Answer: 18, 54 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 28, 25, 34, 47, 23, 20, 30, 18. Give your answer to 2 decimal places

    Answer: 28.13

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