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

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

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 49

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

    Calculate the hypotenuse when a = 6cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 12, 31, 37, 34, 10, 27, 34. Give your answer to 2 decimal places

    Answer: 26.43

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