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Cornerstone · Grades 3–5 Keystones #1 3 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄6

    Answer: 9⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 27

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 2:1

    Answer: 22 and 11
  5. 5. Statistics Mean

    Find the mean of: 14, 6, 7, 25

    Answer: 13

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