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Cornerstone · Grades 3–5 Keystones #1 30 June 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 2⁄4

    Answer: 9⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 28

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

    Calculate the hypotenuse when a = 7cm and b = 6cm

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:2:4

    Answer: 12, 24 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 19, 8, 18, 8, 39, 50, 41, 23

    Answer: 25.8

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