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Cornerstone · Grades 3–5 Keystones #1 5 August 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄6

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

    Solve: 4x - 11 = 29

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 105 in the ratio 3:4

    Answer: 45 and 60
  5. 5. Statistics Mean

    Find the mean of: 18, 12, 8, 18, 9

    Answer: 13

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