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Cornerstone · Grades 3–5 Keystones #1 1 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 3⁄9

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

    Solve: 3x - 6 = 33

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 18, 20, 45, 8, 15, 24, 13, 50. Give your answer to 2 decimal places

    Answer: 24.13

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