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Cornerstone · Grades 3–5 Keystones #1 14 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 2⁄8

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

    Solve: 5x + 11 = 31

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

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 3:2

    Answer: 48 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 28, 29, 10, 32, 43, 43

    Answer: 30.8

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