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Cornerstone · Grades 3–5 Keystones #1 8 January 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 8 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 2x - 18 = 12

    Answer: x = 15
  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 72 in the ratio 1:3:2

    Answer: 12, 36 and 24
  5. 5. Statistics Mean

    Find the mean of: 10, 5, 4, 1

    Answer: 5

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