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Cornerstone · Grades 3–5 Keystones #1 25 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x - 12 = 12

    Answer: x = 4
  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 70 in the ratio 1:2:4

    Answer: 10, 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 2, 11, 15, 4

    Answer: 8

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