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Cornerstone · Grades 3–5 Keystones #1 22 November 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 6⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x - 10 = 46

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 11, 33, 14, 37, 49, 44, 5. Give your answer to 2 decimal places

    Answer: 27.57

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