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Cornerstone · Grades 3–5 Keystones #1 28 February 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 February 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 4⁄8

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

    Solve: 3x + 6 = 36

    Answer: x = 10
  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 130 in the ratio 1:2:2

    Answer: 26, 52 and 52
  5. 5. Statistics Mean

    Find the mean of: 22, 11, 3

    Answer: 12

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