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Cornerstone · Grades 3–5 Keystones #1 23 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 23 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Divide 252 in the ratio 4:4:1

    Answer: 112, 112 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 49, 32, 30, 15, 39, 35, 10

    Answer: 30

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