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Cornerstone · Grades 3–5 Keystones #1 13 April 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 13 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄3

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

    Solve: 5x + 4 = 44

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 2:3:1

    Answer: 48, 72 and 24
  5. 5. Statistics Mean

    Find the mean of: 5, 16, 9, 5, 15

    Answer: 10

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