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Cornerstone · Grades 3–5 Keystones #1 20 February 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 20 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 38

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 4:3:3

    Answer: 80, 60 and 60
  5. 5. Statistics Mean

    Find the mean of: 5, 10, 17, 24, 19

    Answer: 15

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