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

Five GCSE retrieval questions · 5 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 23

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics Mean

    Find the mean of: 17, 14, 6, 16, 17

    Answer: 14

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