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Cornerstone · Grades 3–5 Keystones #1 11 June 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 June 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 4⁄7

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

    Solve: 7x + 9 = 72

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 1:4:3

    Answer: 20, 80 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 16, 39, 7, 20, 7, 30. Give your answer to 2 decimal places

    Answer: 19.83

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