Question

怎样算简便就怎样算。1.25×2.5×（0.4×0.8) ; 0.8+1.2/0.08; 11/[(0.4+0.04)×0.5]

Answer 1

①1.25×2.5×（0.4×0.8) =(1.25×0.8)×(2.5×0.4)=1×1=1②(0.8+1.2)/0.08=2/0.08=200/8=25③11/[(0.4+0.04)×0.5]=11/[0.4×0.5+0.04×0.5]=11/[0.2+0.02]=11/0.22=1100/22=100/2=50哪里不清欢迎追问，满意谢谢5颗星采纳！

Answer 2

1.25×2.5×（0.4×0.8) =（1.25×0.8）×（2.5×0.4）=1×1=1 0.8+1.2/0.08=0.8÷0.08+1.2÷0.08=10+15=25 11/[(0.4+0.04)×0.5]=11÷【0.4×0.5+0.04×0.5】=11÷【0.2+0.02】=11÷0.22=11÷11÷0.02=50

Answer 3

1.25×2.5×（0.4×0.8) =(1.25×0.8）×（2.5×0.4）=10×1=10 0.8+1.2/0.08=0.8+120÷8=0.8+15=15.811/[(0.4+0.04)×0.5]=11÷[(0.1+0.01)×4×0.5]=11÷（0.11×2）=11÷0.11÷2=100÷2=50

Answer 4

1、1.25×2.5×（0.4×0.8) =(1.25×0.8）×（2.5×0.4）=10×1=10 2、0.8+1.2/0.08=0.8+120÷8=0.8+15=15.811/[(0.4+0.04)×0.5]=11÷[(0.1+0.01)×4×0.5]=11÷（0.11×2）=11÷0.11÷2=100÷2=50