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Cornerstone · Grades 3–5 Keystones #1 4 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 80

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 3:3:2

    Answer: 75, 75 and 50
  5. 5. Statistics Mean

    Calculate the mean of: 49, 27, 5, 14, 38, 46, 46

    Answer: 32.1

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