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

Five GCSE retrieval questions · 1 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 15 = 50

    Answer: x = 13
  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 65 in the ratio 4:1

    Answer: 52 and 13
  5. 5. Statistics Mean

    Find the mean of: 5, 9, 2, 8, 16

    Answer: 8

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