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Cornerstone · Grades 3–5 Keystones #1 20 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 40

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Find the mean of: 7, 17, 20, 6, 10

    Answer: 12

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