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Cornerstone · Grades 3–5 Keystones #1 21 July 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 21 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄4

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x - 14 = 38

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 80 in the ratio 1:4:3

    Answer: 10, 40 and 30
  5. 5. Statistics Mean

    Find the mean of: 3, 3, 1, 13

    Answer: 5

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