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

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = -5

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 161 in the ratio 2:3:2

    Answer: 46, 69 and 46
  5. 5. Statistics Mean

    Find the mean of: 14, 21, 20, 5

    Answer: 15

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