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Cornerstone · Grades 3–5 Keystones #1 16 February 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 16 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 4⁄9

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

    Solve: 6x - 12 = 72

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Find the mean of: 10, 10, 8, 10, 7

    Answer: 9

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