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Cornerstone · Grades 3–5 Keystones #1 28 June 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 28 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 7⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 72

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 2:2:1

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

    Find the mean of: 6, 19, 17

    Answer: 14

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