ejuarez ejuarez
  • 06-09-2016
  • Mathematics
contestada

what is 54.3 - 19.74 using mental math

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apologiabiology
apologiabiology apologiabiology
  • 06-09-2016
so I would split like this
(54.3)-(19.74)=
(54+0.3)-(19+0.74)=
54+0.3-19-0.74=
54-19+0.30-0.74=
35-0.44=
34+1-0.44=
34+0.56=
34.56

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Watson7
Watson7 Watson7
  • 06-09-2016
The answer is 34.56 using mental math.
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