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Cornerstone · Grades 3–5 Keystones #1 14 April 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 14 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 5⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 10 = 53

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

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 3:1:4

    Answer: 78, 26 and 104
  5. 5. Statistics Mean

    Find the mean of: 19, 4, 10, 17, 10

    Answer: 12

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