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

Five GCSE retrieval questions · 3 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 6⁄8

    Answer: 41⁄28
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 37

    Answer: x = 6
  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 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 45, 18, 36, 11, 6, 18, 33, 9

    Answer: 22

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