Question

5-0.75/1.5*6.4=? 1.25*0.7*8*0.9=? 8.56*98+856*0.02=? 800*(0.3+1.25)/6.2=?3.14*10.1-0.314=?

还有；0.888*125*73+999*3=？ 脱式计算，能简便的就减便，要过程全部。速度。现在要，作业的

Answer 1

5-0.75/1.5*6.4=5-1/2*6.4=5-3.2=1.8
1.25*0.7*8*0.9=1.25*8*0.7*0.9=10*0.63=6.3
8.56*98+856*0.02==856*0.98+856*0.02=856
800*(0.3+1.25)/6.2=800*(1.24+0.31)/6.2=800*(0.2+0.05)=800*0.25=200
3.14*10.1-0.314=3.14*10=31.4
0.888*125*73=0.111*8*125*(8*9+1)=999*8+111
0.888*125*73+999*3=999*8+111+999*3=999*11+111=111*99+111
=111*(99+1)=11100

Answer 2

5-0.75/1.5*6.4=5-1/2*6.4=5-3.2=1.8
1.25*0.7*8*0.9=1.25*8*0.7*0.9=10*0.63=6.3
8.56*98+856*0.02==856*0.98+856*0.02=856
800*(0.3+1.25)/6.2=800*(1.24+0.31)/6.2=800*(0.2+0.05)=800*0.25=200
3.14*10.1-0.314=3.14*10=31.4
0.888*125*73=0.111*8*125*(8*9+1)=999*8+111
0.888*125*73+999*3=999*8+111+999*3=999*11+111=111*99+111
=111*(99+1)=11100

Answer 3

1+1
=2