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Cornerstone · Grades 3–5 Keystones #1 26 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 44

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 3:4:2

    Answer: 48, 64 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 42, 17, 10, 34, 15, 21, 15, 14

    Answer: 21