①82+9-53=
②89-34-18=
③90-36+15=
④28+37-16=
⑤12+48+36=
⑥45-19+18=
( )×( )=( ) ( )×( )=( )( )÷( )=( ) ( )÷( )=( )
综合算式 :( )
3.6×3.6 1.76÷0.171.76
-3.9-2.8 0.6×÷