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Cornerstone · Grades 3–5 Keystones #1 26 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄7

    Answer: 13⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 25

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:2:4

    Answer: 24, 48 and 96
  5. 5. Statistics Mean

    Find the mean of: 17, 12, 12, 19

    Answer: 15

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