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Cornerstone · Grades 3–5 Keystones #1 17 July 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 17 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄8

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = 5

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 3:4

    Answer: 18 and 24
  5. 5. Statistics Mean

    Find the mean of: 19, 13, 5, 3

    Answer: 10

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