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

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 8x - 5 = 43

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

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 1:3:4

    Answer: 25, 75 and 100
  5. 5. Statistics Mean

    Find the mean of: 15, 4, 14

    Answer: 11

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