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Cornerstone · Grades 3–5 Keystones #1 15 November 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 42

    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 171 in the ratio 4:2:3

    Answer: 76, 38 and 57
  5. 5. Statistics Mean

    Find the mean of: 7, 15, 19, 19

    Answer: 15

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