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Cornerstone · Grades 3–5 Keystones #1 1 November 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 3⁄12

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 20 = -5

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 4:1:3

    Answer: 68, 17 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 11, 7, 9, 14, 36, 9, 17, 46. Give your answer to 2 decimal places

    Answer: 18.63

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