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Cornerstone · Grades 3–5 Keystones #1 17 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 19

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

    Calculate the hypotenuse when a = 11cm and b = 9cm

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 119 in the ratio 3:2:2

    Answer: 51, 34 and 34
  5. 5. Statistics Mean

    Find the mean of: 16, 18, 11, 6, 4

    Answer: 11

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