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Cornerstone · Grades 3–5 Keystones #1 19 November 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 19 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 6⁄8

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 55

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 3:1:2

    Answer: 42, 14 and 28
  5. 5. Statistics Mean

    Find the mean of: 23, 5, 19, 12, 6

    Answer: 13

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