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Cornerstone · Grades 3–5 Keystones #1 24 March 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 24 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 6⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 30

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

    Calculate the hypotenuse when a = 5cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.93cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 3:4

    Answer: 36 and 48
  5. 5. Statistics Mean

    Find the mean of: 12, 13, 4, 21, 10

    Answer: 12

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