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

Five GCSE retrieval questions · 5 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 110 + 110

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

    Solve: 2x + 7 = 31

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 4:1:2

    Answer: 104, 26 and 52
  5. 5. Statistics Mean

    Find the mean of: 20, 15, 3, 19, 9

    Answer: 13.2