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Cornerstone · Grades 3–5 Keystones #1 6 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 20 = 32

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:2:2

    Answer: 24, 48 and 48
  5. 5. Statistics Mean

    Find the mean of: 15, 6, 15

    Answer: 12

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