2019-998= = = =
= = = =
+= -= ÷= 6-=
0.4+6.6= 1-7÷8= 2.4×5= 3.4+2.6÷10%=
10-3.6× = :0.1= ×8÷ ×8= 9×( )=
1.47+5.3=
0×99=
9.9÷11=
0.3×3.6=
1÷0.5=
2.8÷1.4×0.2=
-0.375=
5-=
0.32÷10%=
(填上合适的数并简便计算)
+ = - = ×12= 24× =
÷ = ÷3= ÷15= × =
- = × = 12.5÷0.5= 0.32× =
3200+40= - = × ×0= 5-4÷ =
0.75×4=
×12.3=
6.1×9.8≈
( ):=
0.04+7.6=
0.92=
6.5+3.5÷10=