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Cornerstone · Grades 3–5 Keystones #1 15 October 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 15 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄3

    Answer: 3⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 24

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

    Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 3:4:1

    Answer: 30, 40 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 44, 29, 43, 49, 50, 10

    Answer: 37.5

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