①
②
③
④39.7+180÷1.5
⑤
⑥
0.37+0.45=
=
0.01×4.3=
1.6×0.5=
0.8+2.2=
23=
+ =
× =
16÷ =
①24×( - + )
②15×( + )×17%
③1.3×37.5%+2.7×
④ ÷[( - )× ]