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Cornerstone · Grades 3–5 Keystones #1 10 June 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 2⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 28

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 1:2:4

    Answer: 20, 40 and 80
  5. 5. Statistics Mean

    Find the mean of: 8, 14, 7, 3

    Answer: 8

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