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Cornerstone · Grades 3–5 Keystones #1 31 July 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 31 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 3⁄12

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 24

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

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics Mean

    Find the mean of: 8, 9, 9, 20, 4

    Answer: 10

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