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Cornerstone · Grades 3–5 Keystones #1 20 May 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 3⁄11

    Answer: 5⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x - 13 = 15

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 4:2:3

    Answer: 64, 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 38, 34, 47, 22, 24, 47, 36. Give your answer to 2 decimal places

    Answer: 35.43

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