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Cornerstone · Grades 3–5 Keystones #1 28 March 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 March 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄3

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 7 = 48

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 1:2:3

    Answer: 12, 24 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 25, 7, 20, 15, 42, 49, 49. Give your answer to 2 decimal places

    Answer: 29.57

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