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Cornerstone · Grades 3–5 Keystones #1 17 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 4⁄6

    Answer: 19⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 31

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 4:1

    Answer: 20 and 5
  5. 5. Statistics Mean

    Find the mean of: 2, 18, 19

    Answer: 13

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