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Cornerstone · Grades 3–5 Keystones #1 10 December 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 10 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄6

    Answer: 19⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x + 6 = 26

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 3:3:1

    Answer: 57, 57 and 19
  5. 5. Statistics Mean

    Find the mean of: 5, 22, 5, 4

    Answer: 9

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