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Cornerstone · Grades 3–5 Keystones #1 23 March 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 23 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 23

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

    Calculate the hypotenuse when a = 6cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 4:3:2

    Answer: 40, 30 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 47, 35, 47, 47, 10, 37, 22, 41

    Answer: 35.75

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