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Cornerstone · Grades 3–5 Keystones #1 30 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 16

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 50 in the ratio 2:1:2

    Answer: 20, 10 and 20
  5. 5. Statistics Mean

    Find the mean of: 11, 19, 6

    Answer: 12

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