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Cornerstone · Grades 3–5 Keystones #1 24 August 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 24 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 8

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 55 in the ratio 2:2:1

    Answer: 22, 22 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 10, 27, 36, 6, 23, 41, 20, 32. Give your answer to 2 decimal places

    Answer: 24.38

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