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Cornerstone · Grades 3–5 Keystones #1 13 September 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 September 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 29

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

    Calculate the hypotenuse when a = 8cm and b = 15cm

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

    Divide 176 in the ratio 3:1:4

    Answer: 66, 22 and 88
  5. 5. Statistics Mean

    Find the mean of: 15, 4, 14

    Answer: 11

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