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Cornerstone · Grades 3–5 Keystones #1 6 October 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 6 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 19

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 2:1:1

    Answer: 92, 46 and 46
  5. 5. Statistics Mean

    Find the mean of: 12, 8, 4, 10, 11

    Answer: 9

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