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Cornerstone · Grades 3–5 Keystones #1 22 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 22 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 75

    Answer: x = 13
  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 250 in the ratio 3:4:3

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

    Calculate the mean of: 29, 46, 8, 19, 10, 10, 38, 41. Give your answer to 2 decimal places

    Answer: 25.13

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