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Cornerstone · Grades 3–5 Keystones #1 10 November 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 10 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x - 12 = 36

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 2:3:2

    Answer: 42, 63 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 24, 42, 23, 36, 27, 32. Give your answer to 2 decimal places

    Answer: 30.67

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