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Cornerstone · Grades 3–5 Keystones #1 13 December 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 13 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 3⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x + 15 = 37

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 1:3:1

    Answer: 26, 78 and 26
  5. 5. Statistics Mean

    Find the mean of: 16, 12, 2

    Answer: 10

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