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Cornerstone · Grades 3–5 Keystones #1 28 July 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 28 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄4

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

    Solve: 7x + 8 = 43

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 1:1:4

    Answer: 12, 12 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 39, 50, 25, 6, 48, 49, 29, 14

    Answer: 32.5

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