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

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 20 = 46

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Divide 105 in the ratio 1:4:2

    Answer: 15, 60 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 50, 8, 23, 49, 6, 27. Give your answer to 2 decimal places

    Answer: 27.17

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