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Cornerstone · Grades 3–5 Keystones #1 18 January 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 41

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 1:2

    Answer: 6 and 12
  5. 5. Statistics Mean

    Find the mean of: 7, 18, 14

    Answer: 13

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