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

Five GCSE retrieval questions · 3 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 32

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:2:4

    Answer: 12, 24 and 48
  5. 5. Statistics Mean

    Find the mean of: 14, 10, 8, 2

    Answer: 8.5

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