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Cornerstone · Grades 3–5 Keystones #1 26 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 5⁄8

    Answer: 31⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x - 10 = 65

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 4:3:1

    Answer: 100, 75 and 25
  5. 5. Statistics Mean

    Find the mean of: 11, 22, 6

    Answer: 13

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