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

  1. 1. Number Adding fractions

    Add: 7⁄8 + 2⁄3

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 39

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics Mean

    Find the mean of: 11, 23, 19, 3

    Answer: 14

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