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Cornerstone · Grades 3–5 Keystones #1 19 April 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄4

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 36

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics Mean

    Find the mean of: 17, 8, 20

    Answer: 15

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