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Cornerstone · Grades 3–5 Keystones #1 2 June 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 6⁄7

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x - 19 = 65

    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 40 in the ratio 1:1:2

    Answer: 10, 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 14, 19, 26, 45, 11, 35, 50, 45

    Answer: 30.6

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