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Cornerstone · Grades 3–5 Keystones #1 18 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 1⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 76

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 220 in the ratio 2:2:1

    Answer: 88, 88 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 9, 50, 11, 25, 35, 19, 33, 33

    Answer: 26.9

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