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Cornerstone · Grades 3–5 Keystones #1 25 January 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 25 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄4

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 3x + 10 = 43

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.76cm
  4. 4. Ratio Sharing in a ratio

    Share 114 in the ratio 2:1

    Answer: 76 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 35, 43, 38, 11, 43, 19, 42, 27

    Answer: 32.25

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