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

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x - 20 = 64

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 64 in the ratio 2:1:1

    Answer: 32, 16 and 16
  5. 5. Statistics Mean

    Find the mean of: 19, 17, 14, 8, 2

    Answer: 12

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