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Cornerstone · Grades 3–5 Keystones #1 13 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 19

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 1:3:3

    Answer: 13, 39 and 39
  5. 5. Statistics Mean

    Find the mean of: 13, 16, 5, 16

    Answer: 12.5

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