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Cornerstone · Grades 3–5 Keystones #1 4 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 21

    Answer: x = 4
  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 1:2

    Answer: 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 11, 15, 4

    Answer: 10

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