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Cornerstone · Grades 3–5 Keystones #1 24 May 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 5⁄6

    Answer: 37⁄30
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 11

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics Mean

    Find the mean of: 17, 12, 7

    Answer: 12

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