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Cornerstone · Grades 3–5 Keystones #1 10 October 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 October 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 76 in the ratio 1:3

    Answer: 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 43, 48, 6, 27, 19, 20, 14, 33

    Answer: 26.25