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Cornerstone · Grades 3–5 Keystones #1 29 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 28 + 13

    Answer: 712
  2. 2. Algebra Two-step equations

    Solve: 5x + 5 = 55

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 10cm

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:1:2

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

    Calculate the mean of: 37, 33, 31, 18, 28, 33

    Answer: 30