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Cornerstone · Grades 3–5 Keystones #1 27 December 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 27 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 5⁄7

    Answer: 37⁄42
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 3

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

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 196 in the ratio 2:2:3

    Answer: 56, 56 and 84
  5. 5. Statistics Mean

    Find the mean of: 9, 15, 6, 2

    Answer: 8

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