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Cornerstone · Grades 3–5 Keystones #1 10 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 25 + 38

    Answer: 3140
  2. 2. Algebra Two-step equations

    Solve: 4x - 20 = 4

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

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 189 in the ratio 3:2:2

    Answer: 81, 54 and 54
  5. 5. Statistics Mean

    Find the mean of: 11, 20, 20, 14

    Answer: 16.25