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Cornerstone · Grades 3–5 Keystones #1 28 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 5⁄6

    Answer: 3⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 43

    Answer: x = 10
  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

    Share 78 in the ratio 2:1

    Answer: 52 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 22, 23, 45, 24, 41, 5, 29

    Answer: 27

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