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Cornerstone · Grades 3–5 Keystones #1 13 April 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 11

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 23, 39, 18, 28, 35, 17, 39, 13

    Answer: 26.5

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