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Cornerstone · Grades 3–5 Keystones #1 17 February 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 37

    Answer: x = 8
  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 126 in the ratio 2:4:3

    Answer: 28, 56 and 42
  5. 5. Statistics Mean

    Find the mean of: 13, 18, 5

    Answer: 12

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