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Cornerstone · Grades 3–5 Keystones #1 13 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄7

    Answer: 13⁄14
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 27

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

    Calculate the hypotenuse when a = 10cm and b = 4cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 4:2:3

    Answer: 120, 60 and 90
  5. 5. Statistics Mean

    Find the mean of: 12, 3, 8, 12

    Answer: 8.75

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