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Cornerstone · Grades 3–5 Keystones #1 20 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 20 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 51

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 207 in the ratio 3:2:4

    Answer: 69, 46 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 30, 9, 48, 18, 15, 35. Give your answer to 2 decimal places

    Answer: 25.83

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