1.9x+0.5x=96 6x-3×4=1.2 (100-3x)÷2=8
1-0.89=
+=
0.95-=
+-=
2-=
3÷7=
0.1÷10=
+ = - = - = 1- =
+ = + = - = 1- - =
+ = ×14= × = × ÷ =
0.75+ = 6÷ = ÷ = ×0÷ =
1- = + = ×9= 18÷ =
- = ÷15= 36× = ÷ =