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Cornerstone · Grades 3–5 Keystones #1 11 April 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 11 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

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

    Solve: 6x + 4 = 22

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

    Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 2:1

    Answer: 48 and 24
  5. 5. Statistics Mean

    Find the mean of: 2, 13, 19, 6

    Answer: 10

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