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Cornerstone · Grades 3–5 Keystones #1 16 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 16 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 + 13 = 53

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 232 in the ratio 1:3:4

    Answer: 29, 87 and 116
  5. 5. Statistics Mean

    Find the mean of: 18, 17, 7, 18

    Answer: 15

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