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Cornerstone · Grades 3–5 Keystones #1 16 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 2⁄8

    Answer: 23⁄28
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 29

    Answer: x = 6
  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 180 in the ratio 3:4:2

    Answer: 60, 80 and 40
  5. 5. Statistics Mean

    Find the mean of: 20, 20, 11

    Answer: 17

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