
核心提示: 26×30= 250×4= 290+53=
| 26×30= | 250×4= | 290+53= | 40×17= | 96÷8= | 
| 810÷90= | 61-22= | 17×2= | 810÷90= | 60×500= | 
| 270+430= | 60÷2= | 70÷14= | 270+38= | 120-34= |