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Cornerstone · Grades 3–5 Keystones #1 20 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x - 19 = 1

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 100 in the ratio 1:3:1

    Answer: 20, 60 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 42, 35, 36, 27, 15, 35, 37

    Answer: 32.4

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