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Cornerstone · Grades 3–5 Keystones #1 27 December 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 27 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = 28

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 1:3:3

    Answer: 13, 39 and 39
  5. 5. Statistics Mean

    Find the mean of: 7, 7, 10

    Answer: 8

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