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Cornerstone · Grades 3–5 Keystones #1 14 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄7

    Answer: 13⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 23

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

    Calculate the hypotenuse when a = 12cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 2:3:1

    Answer: 32, 48 and 16
  5. 5. Statistics Mean

    Find the mean of: 13, 11, 15

    Answer: 13

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