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Cornerstone · Grades 3–5 Keystones #1 15 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄6

    Answer: 22⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x - 17 = 13

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 250 in the ratio 3:4:3

    Answer: 75, 100 and 75
  5. 5. Statistics Mean

    Calculate the mean of: 11, 36, 30, 41, 19, 13

    Answer: 25

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