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Cornerstone · Grades 3–5 Keystones #1 6 November 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄3

    Answer: 19⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x + 4 = 22

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

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 1:3:2

    Answer: 15, 45 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 18, 37, 8, 30, 8, 20, 44

    Answer: 23.6

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