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Cornerstone · Grades 3–5 Keystones #1 11 March 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 March 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄6

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 19 = 1

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

    Answer: 104, 52 and 104
  5. 5. Statistics Mean

    Find the mean of: 2, 11, 3, 16

    Answer: 8

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