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Cornerstone · Grades 3–5 Keystones #1 11 September 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄6

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

    Solve: 2x - 17 = -1

    Answer: x = 8
  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

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics Mean

    Find the mean of: 14, 8, 13, 3, 7

    Answer: 9

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