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Cornerstone · Grades 3–5 Keystones #1 24 April 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄8

    Answer: 31⁄56
  2. 2. Algebra Two-step equations

    Solve: 6x - 10 = 20

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 220 in the ratio 2:1:2

    Answer: 88, 44 and 88
  5. 5. Statistics Mean

    Find the mean of: 15, 14, 13

    Answer: 14

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