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Cornerstone · Grades 3–5 Keystones #1 29 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 92

    Answer: x = 14
  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 90 in the ratio 2:2:1

    Answer: 36, 36 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 6, 29, 31, 16, 8, 10, 11, 34

    Answer: 18.1

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