下面各题怎样简便就怎样算(求未知数x)
| 9 | |
| 29× | 999 |
| 0.625×7.3×1 | 1 |
| ( |
| 口算. 35×2= | 17×4= | 16×4= | 38×2= |
| 120×6= | 130×7= | 270×5= | 480×3= |
| 150×5= | 240×3= | 260×3= | 230×4= |
| 9×14= | 2×450= | 5×16= | 24×5= |
| 250×4= | 26×3= | 6×140= | 270×3= |
| 9 | |
| 29× | 999 |
| 0.625×7.3×1 | 1 |
| ( |
| 口算. 35×2= | 17×4= | 16×4= | 38×2= |
| 120×6= | 130×7= | 270×5= | 480×3= |
| 150×5= | 240×3= | 260×3= | 230×4= |
| 9×14= | 2×450= | 5×16= | 24×5= |
| 250×4= | 26×3= | 6×140= | 270×3= |