52-19 = 560÷7= 17×5 = 84÷6 =
600÷2 = 0×46 = 80÷5 = 300×9 =
+ = - = + = - =
①75×4=
②409×6=
③* 297÷3=
④6×250=
⑤540÷5=
⑥* 481÷8=
366÷2366÷3 4×6026×402 43×3×243×6
①
②