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Cornerstone · Grades 3–5 Keystones #1 9 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 9⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x - 18 = 18

    Answer: x = 12
  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 225 in the ratio 4:4:1

    Answer: 100, 100 and 25
  5. 5. Statistics Mean

    Find the mean of: 20, 15, 11, 17, 17

    Answer: 16

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