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Cornerstone · Grades 3–5 Keystones #1 27 June 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 27 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 5⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 30

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.76cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 3:3:2

    Answer: 51, 51 and 34
  5. 5. Statistics Mean

    Find the mean of: 12, 15, 5, 12, 6

    Answer: 10

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