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Cornerstone · Grades 3–5 Keystones #1 20 August 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 20 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 84

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 4:3

    Answer: 44 and 33
  5. 5. Statistics Mean

    Find the mean of: 20, 17, 13, 7, 8

    Answer: 13

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