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

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

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

    Solve: 6x + 13 = 61

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

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 10, 12, 8, 14

    Answer: 11

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