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Cornerstone · Grades 3–5 Keystones #1 18 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 2⁄7

    Answer: 29⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 38

    Answer: x = 5
  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 189 in the ratio 2:1:4

    Answer: 54, 27 and 108
  5. 5. Statistics Mean

    Find the mean of: 15, 5, 14

    Answer: 11.333333333333

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