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Cornerstone · Grades 3–5 Keystones #1 25 January 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 25 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

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

    Solve: 5x + 10 = 35

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  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: 15, 10, 8

    Answer: 11

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