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

Five GCSE retrieval questions · 5 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 6⁄8

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 10

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 161 in the ratio 1:3:3

    Answer: 23, 69 and 69
  5. 5. Statistics Mean

    Find the mean of: 11, 12, 10

    Answer: 11

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