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Cornerstone · Grades 3–5 Keystones #1 21 April 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 3⁄4

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 47

    Answer: x = 8
  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 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics Mean

    Find the mean of: 12, 16, 17

    Answer: 15

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