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Cornerstone · Grades 3–5 Keystones #1 18 April 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 18 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 8⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 27

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

    Calculate the hypotenuse when a = 11cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:3:1

    Answer: 12, 36 and 12
  5. 5. Statistics Mean

    Find the mean of: 4, 18, 13, 5

    Answer: 10

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