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Cornerstone · Grades 3–5 Keystones #1 9 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 38 + 35

    Answer: 3940
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 23

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

    Calculate the hypotenuse when a = 12cm and b = 7cm

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 78 in the ratio 1:3:2

    Answer: 13, 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 4, 3, 9, 17

    Answer: 8.25