70×4=
90×6=
21×4=
900×8=
6×5+2=
29×1=
6×11=
22×3=
7×400=
4×9+3=
810-466=
445-277=
356+626=
865-578=
445+385=
1000-455=
345+513=
957-679=
531+975=
987-799=
342-274=
258+553=
买小奶糕的钱数是:
买小奶糕的数量是:
× = 4÷0.8= 3﹣ = 0.23=
÷ = 786﹣298= 25×0.7×4= 8.7+7=
( ﹣0.375)÷ = × ÷ × =