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Cornerstone · Grades 3–5 Keystones #1 26 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 27

    Answer: x = 7
  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

    Share 55 in the ratio 3:2

    Answer: 33 and 22
  5. 5. Statistics Mean

    Find the mean of: 9, 18, 12

    Answer: 13

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