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Cornerstone · Grades 3–5 Keystones #1 20 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 20 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 52

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

    Calculate the hypotenuse when a = 5cm and b = 15cm

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 3:4:2

    Answer: 54, 72 and 36
  5. 5. Statistics Mean

    Find the mean of: 19, 11, 20, 12, 3

    Answer: 13

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