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Cornerstone · Grades 3–5 Keystones #1 19 January 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 19 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 6⁄7

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

    Solve: 8x - 11 = 53

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.23cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 4:3

    Answer: 44 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 13, 6, 37, 35, 21, 50, 37. Give your answer to 2 decimal places

    Answer: 28.43

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