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Cornerstone · Grades 3–5 Keystones #1 11 February 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 53

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 125 in the ratio 2:1:2

    Answer: 50, 25 and 50
  5. 5. Statistics Mean

    Calculate the mean of: 26, 14, 40, 50, 13, 16, 13. Give your answer to 2 decimal places

    Answer: 24.57

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