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Cornerstone · Grades 3–5 Keystones #1 25 September 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 25 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 26

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 253 in the ratio 4:3:4

    Answer: 92, 69 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 38, 32, 12, 13, 39, 40, 49, 38. Give your answer to 2 decimal places

    Answer: 32.63

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