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Cornerstone · Grades 3–5 Keystones #1 17 January 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 1⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 58

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 2:1:1

    Answer: 68, 34 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 7, 9, 44, 50, 18, 10

    Answer: 23

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