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Cornerstone · Grades 3–5 Keystones #1 14 February 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 14 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 5⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 21

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

    Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 44, 22, 42, 50, 42, 41, 23, 5. Give your answer to 2 decimal places

    Answer: 33.63

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