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Cornerstone · Grades 3–5 Keystones #1 30 August 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 30 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x - 8 = 0

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.23cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 4:3:2

    Answer: 120, 90 and 60
  5. 5. Statistics Mean

    Find the mean of: 18, 4, 13, 20, 5

    Answer: 12

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