(1+ )x=
x=( )
4< 3= ×
÷5= < ×
×10 ×11 8÷38× ÷2
1× 1- 1÷51+ ÷
1- - = × = 0.1÷10%= 0.7+ =
3.6×99+3.6= 0.24×5= ÷ = 0.23=
÷ ×2.1
÷ ×2
+ = 63× = ÷ = × ÷ × =
- = 0.03²= ÷ = ÷22=
÷ × ÷ ×