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Cornerstone · Grades 3–5 Keystones #1 19 April 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 59

    Answer: x = 8
  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 144 in the ratio 1:1:4

    Answer: 24, 24 and 96
  5. 5. Statistics Mean

    Calculate the mean of: 11, 31, 33, 9, 10, 5, 21, 30

    Answer: 18.75

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