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Cornerstone · Grades 3–5 Keystones #1 29 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 29 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x - 5 = 79

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:2:2

    Answer: 24, 48 and 48
  5. 5. Statistics Mean

    Find the mean of: 3, 16, 17

    Answer: 12

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