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Cornerstone · Grades 3–5 Keystones #1 25 June 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 25 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 59

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 100 in the ratio 1:2:2

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

    Calculate the mean of: 50, 20, 37, 32, 11, 9, 8, 50. Give your answer to 2 decimal places

    Answer: 27.13

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