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Cornerstone · Grades 3–5 Keystones #1 15 February 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄6

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 42

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

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics Mean

    Find the mean of: 13, 20, 9, 6

    Answer: 12

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