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Cornerstone · Grades 3–5 Keystones #1 25 October 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 25 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 3⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 68

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 261 in the ratio 2:3:4

    Answer: 58, 87 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 8, 26, 5, 44, 19, 46, 7. Give your answer to 2 decimal places

    Answer: 22.14

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