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Cornerstone · Grades 3–5 Keystones #1 24 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄4

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 91

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 3:2:4

    Answer: 30, 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 13, 17, 11, 7, 4

    Answer: 10.4

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