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Cornerstone · Grades 3–5 Keystones #1 6 July 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 6 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 1⁄12

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 8

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

    Calculate the hypotenuse when a = 7cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics Mean

    Find the mean of: 8, 4, 3, 5

    Answer: 5

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