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Cornerstone · Grades 3–5 Keystones #1 17 March 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 17 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 65

    Answer: x = 14
  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 209 in the ratio 4:4:3

    Answer: 76, 76 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 14, 14, 39, 39, 49, 43, 50. Give your answer to 2 decimal places

    Answer: 35.43

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