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Cornerstone · Grades 3–5 Keystones #1 4 August 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 6⁄8

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 67

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 180 in the ratio 2:1:2

    Answer: 72, 36 and 72
  5. 5. Statistics Mean

    Find the mean of: 3, 4, 7, 20, 16

    Answer: 10

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