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Cornerstone · Grades 3–5 Keystones #1 16 September 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 16 September 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 5⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 41

    Answer: x = 5
  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 189 in the ratio 4:4:1

    Answer: 84, 84 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 47, 45, 10, 31, 43, 32, 6. Give your answer to 2 decimal places

    Answer: 30.57

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