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Cornerstone · Grades 3–5 Keystones #1 8 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄5

    Answer: 37⁄30
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 49

    Answer: x = 12
  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 198 in the ratio 3:2:4

    Answer: 66, 44 and 88
  5. 5. Statistics Mean

    Find the mean of: 3, 16, 2, 12

    Answer: 8.25

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