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Cornerstone · Grades 3–5 Keystones #1 16 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 34

    Answer: x = 10
  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 156 in the ratio 2:3:1

    Answer: 52, 78 and 26
  5. 5. Statistics Mean

    Find the mean of: 11, 3, 16

    Answer: 10

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