704×8= ★469+ 283= 630×7=
370+450= ★924-536= 145×6=
797-338=
750-253=
834-776=
716-316=
659-567=
569-366=
983-327=
577-545=
975-883=
825-332=
641-353=
445-279=
465-271=
650-17=
261+59=
431+369=
385-279=
789-191=
+ = 50÷50%= = 3 -1.125=
1.9÷2.5÷0.4= ( )×18= = 1- =
①75.6×27﹣170×7.56
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