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Cornerstone · Grades 3–5 Keystones #1 31 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 45 + 34

    Answer: 3120
  2. 2. Algebra Two-step equations

    Solve: 7x - 15 = 62

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 4cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 3:3:2

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

    Find the mean of: 6, 14, 17, 7

    Answer: 11