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Cornerstone · Grades 3–5 Keystones #1 31 October 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 31 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 1⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 43

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

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 4:2:1

    Answer: 100, 50 and 25
  5. 5. Statistics Mean

    Find the mean of: 14, 2, 7, 9, 18

    Answer: 10

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