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Cornerstone · Grades 3–5 Keystones #1 9 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 2⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 5 = 50

    Answer: x = 9
  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 180 in the ratio 1:3:2

    Answer: 30, 90 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 44, 15, 7, 49, 10, 5, 16, 50

    Answer: 24.5

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