① ×
②3÷( × )
③1- ×
④ ×( )
⑤ × ×
⑥ ×[ ÷( )]
48×25%= 334-199= 12÷0.25= 2018×2018×0=
3-3÷4= 3- = 9-1.67-5.33= 1.8× =
( - )×20= 14× ÷14× =
15.5× = 1÷ ×7= 2.1÷ =
0.75+ = - ×0= 12.6-1.7=
×5÷ ×5=