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Cornerstone · Grades 3–5 Keystones #1 4 February 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 February 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x + 6 = 16

    Answer: x = 5
  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 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics Mean

    Find the mean of: 11, 6, 7

    Answer: 8

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