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Cornerstone · Grades 3–5 Keystones #1 10 September 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 10 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 25

    Answer: x = 7
  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 40 in the ratio 1:1:2

    Answer: 10, 10 and 20
  5. 5. Statistics Mean

    Find the mean of: 2, 2, 11, 21

    Answer: 9

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