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Cornerstone · Grades 3–5 Keystones #1 29 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 29 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 55

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 3:4:1

    Answer: 72, 96 and 24
  5. 5. Statistics Mean

    Find the mean of: 3, 25, 11, 17

    Answer: 14

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