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Cornerstone · Grades 3–5 Keystones #1 4 June 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 16 = 8

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 210 in the ratio 2:2:3

    Answer: 60, 60 and 90
  5. 5. Statistics Mean

    Calculate the mean of: 45, 6, 39, 42, 48, 34, 14. Give your answer to 2 decimal places

    Answer: 32.57

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