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Cornerstone · Grades 3–5 Keystones #1 6 October 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 6 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 68

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 2:4:1

    Answer: 44, 88 and 22
  5. 5. Statistics Mean

    Find the mean of: 12, 10, 4, 14, 5

    Answer: 9

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