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Cornerstone · Grades 3–5 Keystones #1 13 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄6

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 43

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 2:3:3

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

    Calculate the mean of: 27, 27, 17, 50, 10, 22, 29

    Answer: 26

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