①47×3=
②507×6=
③240×7=
④319×4=
⑤125×8=
⑥5×369=
①190+270=
②800-450=
③190+360=
④640+280=
⑤870-380=
⑥730-280=
①520+130=
②180+650=
③880-320=
④730-280=
⑤480+320=
⑥700-260=