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Cornerstone · Grades 3–5 Keystones #1 7 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄8

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 74

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 125 in the ratio 1:1:3

    Answer: 25, 25 and 75
  5. 5. Statistics Mean

    Find the mean of: 5, 19, 18

    Answer: 14

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