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Cornerstone · Grades 3–5 Keystones #1 17 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 7⁄8

    Answer: 97⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x - 10 = 60

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 22, 22, 20, 30, 37, 50, 27, 6

    Answer: 26.75

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