Question

[dinh kieu nhi]

2.34*0.25*0.4                                                         0.15*0.23+0.23*0.85                              12.5*20.06*0.8                                                                                          1.45*0.36-0.36*0.45

Answer 1

[Buì Thu Thuỷ]

2.34*0.25*0.4=2.34*(0.25*0.4)=2.34*0.1=0.234

0.15*0.23+0.23*0.85=0.23+(0.15+0.85)=0.23*1=0.23

12.5*20.06*0.8=20.06*(12.5*0.5)=20.06*10=200.6

1.45*0.36-0.36*0.45=0.36*(1.45-0.45)=0.36*1=0.36

 chúc bạn may mắn @@@

Answer 2

[công chúa xinh xắn]

\(2,34\times0,25\times0,4\)

\(=2,34\times0,1\)

\(=0,234\)

\(0,15\times0,23+0,23\times0,85\)

\(=0,23\times\left(0,15+0,85\right)\)

\(=0,23\times1\)

\(=0,23\)

\(12,5\times20,06\times0,8\)

\(=\left(12,5\times0,8\right)\times20,06\)

\(=10\times20,06\)

\(=200,6\)

\(1,45\times0,36-0,36\times0,45\)

\(=0,36\times\left(1,45-0,45\right)\)

\(=0,36\times1\)

\(=0,36\)