①279+645=
*② 467-264=
③ 405×3=
④ 190×6=
①780-290=
②※900-310=
③※64+25=
④460+370=
⑤69-17=
⑥※58÷8=
※378+245= ※643-13
354×3= 220×5= 408×3=
(+)×9= 1.5×100= 99×0.8+0.8= 42=
+= 7﹣= ×= ÷=