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

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

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄3

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

    Solve: 3x - 20 = -5

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 2:2:3

    Answer: 20, 20 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 36, 5, 41, 31, 43, 9, 30, 11

    Answer: 25.8

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