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Cornerstone · Grades 3–5 Keystones #1 10 July 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

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

    Solve: 3x - 8 = 7

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 49, 28, 33, 34, 19, 46, 30. Give your answer to 2 decimal places

    Answer: 34.14

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