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Cornerstone · Grades 3–5 Keystones #1 11 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄6

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 7 = 17

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 3:4:4

    Answer: 36, 48 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 5, 48, 43, 42, 32, 9, 27, 20

    Answer: 28.25

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