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Cornerstone · Grades 3–5 Keystones #1 11 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄12 + 1⁄12

    Answer: 1⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 69

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 161 in the ratio 2:3:2

    Answer: 46, 69 and 46
  5. 5. Statistics Mean

    Find the mean of: 16, 3, 20

    Answer: 13

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