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

Five GCSE retrieval questions · 7 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 4⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 37

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 4:1

    Answer: 44 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 18, 36, 42, 33, 29, 28, 43, 32. Give your answer to 2 decimal places

    Answer: 32.63

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