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Cornerstone · Grades 3–5 Keystones #1 21 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 6⁄12

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

    Solve: 3x + 12 = 45

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 1:3:3

    Answer: 22, 66 and 66
  5. 5. Statistics Mean

    Calculate the mean of: 16, 32, 31, 19, 11, 15, 28. Give your answer to 2 decimal places

    Answer: 21.71

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