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Cornerstone · Grades 3–5 Keystones #1 12 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 36

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:2:3

    Answer: 20, 40 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 16, 11, 36, 38, 24, 45. Give your answer to 2 decimal places

    Answer: 28.33

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