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Cornerstone · Grades 3–5 Keystones #1 13 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 3⁄4

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

    Solve: 6x + 8 = 50

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 1:2

    Answer: 40 and 80
  5. 5. Statistics Mean

    Find the mean of: 20, 4, 12

    Answer: 12

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