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

Five GCSE retrieval questions · 1 September 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 44

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 3:2:4

    Answer: 36, 24 and 48
  5. 5. Statistics Mean

    Find the mean of: 7, 13, 9, 3

    Answer: 8

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