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Cornerstone · Grades 3–5 Keystones #1 15 March 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 March 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x + 7 = 19

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 3:2

    Answer: 36 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 45, 44, 28, 35, 42, 31

    Answer: 37.5

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