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Cornerstone · Grades 3–5 Keystones #1 19 December 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 15

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 4:3

    Answer: 48 and 36
  5. 5. Statistics Mean

    Find the mean of: 2, 17, 11

    Answer: 10

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