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Cornerstone · Grades 3–5 Keystones #1 13 February 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 13 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 6⁄7

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 86

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 3:4

    Answer: 60 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 5, 36, 49, 37, 43, 10, 6, 42

    Answer: 28.5

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