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

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 28

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Divide 66 in the ratio 1:1:4

    Answer: 11, 11 and 44
  5. 5. Statistics Mean

    Find the mean of: 6, 8, 20, 10

    Answer: 11

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