口算
480÷80= |
(13+29)+11= |
200﹣48﹣52= |
930÷30= |
370﹣80= |
24+19+16= |
125+75÷5= |
180﹣80÷20= |
5×17= |
26×5×2= |
2×47= |
140÷7÷2= |
口算
480÷80= |
(13+29)+11= |
200﹣48﹣52= |
930÷30= |
370﹣80= |
24+19+16= |
125+75÷5= |
180﹣80÷20= |
5×17= |
26×5×2= |
2×47= |
140÷7÷2= |