Answers

  • cef
  • Helping Hand
2014-10-19T21:10:28+08:00
3.75 minus 3.5=0.25
because we simplify each other and minus the sum and the difference.

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2014-10-19T21:46:19+08:00

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12 1/2 =  12 2/4
15 1/4 =  15 1/4

15 1/4 - 12 2/4 = 2 3/4 was the piece of wood left.
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