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Cornerstone · Grades 3–5 Keystones #1 25 April 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 25 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 48

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 3:2:1

    Answer: 84, 56 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 5, 43, 17, 16, 39, 49. Give your answer to 2 decimal places

    Answer: 28.17

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