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Cornerstone · Grades 3–5 Keystones #1 16 November 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 16 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄4

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 27

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 207 in the ratio 1:4:4

    Answer: 23, 92 and 92
  5. 5. Statistics Mean

    Find the mean of: 14, 18, 19, 5

    Answer: 14

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