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Cornerstone · Grades 3–5 Keystones #1 23 March 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 March 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄5

    Answer: 49⁄40
  2. 2. Algebra Two-step equations

    Solve: 6x - 7 = 65

    Answer: x = 12
  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 2:1

    Answer: 56 and 28
  5. 5. Statistics Mean

    Find the mean of: 5, 2, 14

    Answer: 7

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