=
(5) ()
1÷25%=
0.22=
-0.2=
×2 ÷ ×2=
1.4-1.08=
0×(-)=
+÷+=
99×0.8+0.8=
×= 0×+= 1÷=
÷= ÷= ×÷×=
×÷×= ÷×=
÷= += ÷= 0×+=
×= ÷= 21÷×= ×÷×=
①÷×
②×3.2+6.8÷
③105×(+)
④﹣+﹣
⑤6.4÷[(3﹣1.4)×]
① ×
②3÷( × )
③1- ×
④ ×( )
⑤ × ×
⑥ ×[ ÷( )]