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Cornerstone · Grades 3–5 Keystones #1 12 January 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 12 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 2⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x - 18 = 18

    Answer: x = 6
  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

    Divide 144 in the ratio 1:2:3

    Answer: 24, 48 and 72
  5. 5. Statistics Mean

    Find the mean of: 9, 20, 1

    Answer: 10

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