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Cornerstone · Grades 3–5 Keystones #1 21 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄3

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

    Solve: 5x - 18 = 47

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 3:2:1

    Answer: 54, 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 16, 8, 3

    Answer: 9

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