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Cornerstone · Grades 3–5 Keystones #1 18 November 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 18 November 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 47

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Share 63 in the ratio 4:3

    Answer: 36 and 27
  5. 5. Statistics Mean

    Find the mean of: 12, 2, 6, 6, 14

    Answer: 8

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