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Cornerstone · Grades 3–5 Keystones #1 21 June 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 7x - 11 = 45

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 2:1:2

    Answer: 56, 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 5, 8, 15, 5

    Answer: 8.25

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