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Cornerstone · Grades 3–5 Keystones #1 15 September 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 September 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 4⁄6

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x - 10 = 46

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Find the mean of: 13, 20, 7, 11, 14

    Answer: 13

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