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Cornerstone · Grades 3–5 Keystones #1 29 April 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 29 April 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 6⁄9

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

    Solve: 6x + 3 = 63

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 171 in the ratio 4:2:3

    Answer: 76, 38 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 45, 25, 42, 5, 36, 30, 18. Give your answer to 2 decimal places

    Answer: 28.71

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