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Cornerstone · Grades 3–5 Keystones #1 11 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄6

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

    Solve: 5x + 6 = 31

    Answer: x = 5
  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 126 in the ratio 4:4:1

    Answer: 56, 56 and 14
  5. 5. Statistics Mean

    Find the mean of: 7, 10, 14, 18, 1

    Answer: 10

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