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Cornerstone · Grades 3–5 Keystones #1 21 March 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 21 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 4⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 38

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 4:1:1

    Answer: 80, 20 and 20
  5. 5. Statistics Mean

    Find the mean of: 11, 8, 23

    Answer: 14

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