90÷(3.6-1.8)
3.4×7.8÷3.9
(3.2+0.12)÷0.8
78÷2.5÷0.4
54.9×0.38= 5.63÷6.1≈(得数保留一位小数)
x+0.7x=8.5 x÷0.2=1.9 0.5(x-4)=1.4
①7.32-1.4÷0.8
②4.05÷0.05÷0.18
③0.75×18÷0.15
④(3.2+0.56)÷0.8
①
②
③
④
0.125×7.16×80
22.5÷2.5÷0.4
101×0.67
1.97×1.03+1.97×0.97﹣1.97
0.65×11﹣0.65
0.25×40÷0.25×40
0.71 1.5小时90分
88+8.8= 90÷5= 0.1÷0.2= 0.12×0.8= 0.3²=
÷10= ×0.25= - = + = ×7÷ ×7=