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Cornerstone · Grades 3–5 Keystones #1 28 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 14 + 23

    Answer: 1112
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 71

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

    Calculate the hypotenuse when a = 6cm and b = 15cm

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 2:4:3

    Answer: 54, 108 and 81
  5. 5. Statistics Mean

    Find the mean of: 7, 19, 16, 11, 2

    Answer: 11