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Cornerstone · Grades 3–5 Keystones #1 13 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 2⁄12

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

    Solve: 6x + 4 = 52

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:3

    Answer: 20 and 15
  5. 5. Statistics Mean

    Find the mean of: 14, 10, 12

    Answer: 12

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