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Cornerstone · Grades 3–5 Keystones #1 14 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄7

    Answer: 13⁄14
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 23

    Answer: x = 7
  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 117 in the ratio 1:4:4

    Answer: 13, 52 and 52
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 4

    Answer: 8

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