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Cornerstone · Grades 3–5 Keystones #1 23 June 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = 11

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 31, 46, 36, 20, 22, 42. Give your answer to 2 decimal places

    Answer: 32.83