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

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

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄4

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

    Solve: 5x + 13 = 48

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 78 in the ratio 1:2:3

    Answer: 13, 26 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 44, 28, 36, 13, 44, 17, 46

    Answer: 32.6

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