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Cornerstone · Grades 3–5 Keystones #1 27 October 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄4

    Answer: 31⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x - 12 = 14

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 4:1:1

    Answer: 64, 16 and 16
  5. 5. Statistics Mean

    Find the mean of: 19, 10, 12, 8, 21

    Answer: 14

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