①135×26=
②209×34=
③250×16=
④640×30=
⑤19×107=
⑥564×28=
150×20=
400÷80=
270÷9÷5=
403×28≈
125÷5=
810÷30=
80÷(8×5)=
565÷72≈
50×700=
108×5=
( )÷9=15
12×( )=840
546×23=
125×36 =
278×59=
462×81=
①407×35=
②560×25=
③768÷48=
④483÷69=
⑤567÷28=
⑥504÷12=
①215×60=
②705×43=
③860÷40=
④342÷33=
①500÷40=
②704÷32=
③574÷82=
④△288÷43=