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Cornerstone · Grades 3–5 Keystones #1 5 October 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 5 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 7⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x - 16 = 0

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 28, 38, 5, 7, 25, 31, 50. Give your answer to 2 decimal places

    Answer: 26.29

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