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Cornerstone · Grades 3–5 Keystones #1 23 September 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 September 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄12 + 5⁄12

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 34

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 224 in the ratio 1:4:3

    Answer: 28, 112 and 84
  5. 5. Statistics Mean

    Find the mean of: 9, 17, 12, 5, 7

    Answer: 10

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