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Cornerstone · Grades 3–5 Keystones #1 22 February 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 22 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 5⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 47

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 3:4:2

    Answer: 36, 48 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 48, 27, 22, 50, 45, 44, 11, 25

    Answer: 34

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