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Cornerstone · Grades 3–5 Keystones #1 25 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

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

    Solve: 3x + 15 = 33

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 7cm

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 1:4:3

    Answer: 11, 44 and 33
  5. 5. Statistics Mean

    Find the mean of: 8, 14, 16, 18

    Answer: 14

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