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Cornerstone · Grades 3–5 Keystones #1 13 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 13 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 2⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 19

    Answer: x = 6
  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 70 in the ratio 1:3:3

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

    Find the mean of: 19, 13, 8, 8

    Answer: 12

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