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Cornerstone · Grades 3–5 Keystones #1 9 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄6

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

    Solve: 7x + 7 = 42

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 180 in the ratio 3:2:4

    Answer: 60, 40 and 80
  5. 5. Statistics Mean

    Find the mean of: 6, 2, 10, 4, 8

    Answer: 6

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