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Cornerstone · Grades 3–5 Keystones #1 17 December 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 2⁄5

    Answer: 29⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 27

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 252 in the ratio 4:2:3

    Answer: 112, 56 and 84
  5. 5. Statistics Mean

    Find the mean of: 6, 16, 20

    Answer: 14

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