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Cornerstone · Grades 3–5 Keystones #1 25 September 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 25 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 5⁄12

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

    Solve: 8x - 16 = 32

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics Mean

    Find the mean of: 5, 2, 5, 15, 13

    Answer: 8

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