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Cornerstone · Grades 3–5 Keystones #1 12 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 1⁄4

    Answer: 17⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 63

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 77 in the ratio 3:1:3

    Answer: 33, 11 and 33
  5. 5. Statistics Mean

    Find the mean of: 1, 15, 13, 3, 3

    Answer: 7

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