①406×24
②920×32
③89×45
④217×56
⑤435×54
⑥83×307
670÷20=
960÷80=
2600÷210=
890÷50=
7500÷620=
970÷70=
5700÷200=
4300÷800=
400÷210=
670÷30=
8300÷300=
440÷50=