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Cornerstone · Grades 3–5 Keystones #1 18 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 2⁄6

    Answer: 16⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 54

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm

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

    Divide 133 in the ratio 3:2:2

    Answer: 57, 38 and 38
  5. 5. Statistics Mean

    Find the mean of: 20, 15, 12

    Answer: 15.666666666667

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