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Cornerstone · Grades 3–5 Keystones #1 28 October 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄7

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 3x + 11 = 20

    Answer: x = 3
  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

    Divide 260 in the ratio 2:1:2

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

    Find the mean of: 12, 19, 20, 9

    Answer: 15

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