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Cornerstone · Grades 3–5 Keystones #1 28 April 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 28 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 2⁄7

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

    Solve: 3x - 18 = 21

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 1:1:2

    Answer: 48, 48 and 96
  5. 5. Statistics Mean

    Find the mean of: 5, 7, 21

    Answer: 11

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