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Cornerstone · Grades 3–5 Keystones #1 22 October 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 44

    Answer: x = 5
  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 98 in the ratio 3:4

    Answer: 42 and 56
  5. 5. Statistics Mean

    Find the mean of: 20, 3, 4, 17

    Answer: 11

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