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Cornerstone · Grades 3–5 Keystones #1 21 February 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 21 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:1

    Answer: 30 and 10
  5. 5. Statistics Mean

    Find the mean of: 12, 19, 2

    Answer: 11

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