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Cornerstone · Grades 3–5 Keystones #1 13 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 3⁄12

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

    Solve: 3x + 7 = 28

    Answer: x = 7
  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 35 in the ratio 3:4

    Answer: 15 and 20
  5. 5. Statistics Mean

    Find the mean of: 6, 5, 13, 12

    Answer: 9

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