a 25.35+25.73.8. b 33-28:25+6.52

1 bình luận về “a 25.35+25.73.8. b 33-28:25+6.52”

1. Giải đáp:

   a)

   25.35+25.73.8

   =25.(35+73.8)

   =25.(35+584)

   =25.619

   =15475

   b)

   33-28:25+6.52

   =33-\frac{28}{25}+6.52

   =(3.11+3.2.52)-\frac{28}{25}

   =[3.(11+2.52)]-\frac{28}{25}

   =3.115-\frac{28}{25}

   =\frac{8625}{25}-\frac{28}{25}

   =\frac{8597}{25}

   $\color{red}{\text{#DYNA}}$

    

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