下面各题怎样算简便就怎样算. 3.28×4.6+6.72×4.6 | 0.25×1.25×0.4 |
9.73×2.8-4.73×2.8. | 12.5×4+3.12÷1.2 |
25.2-(7.8-2.6)×1.3 | 14.08÷[0.8×(7.93-2.43)]. |
口算
125×8= | 25×4= | 25×8= | 16×5= | 4.35÷100= | 0.08×100= | 0.67×1000= |
下面各题怎样算简便就怎样算. 3.28×4.6+6.72×4.6 | 0.25×1.25×0.4 |
9.73×2.8-4.73×2.8. | 12.5×4+3.12÷1.2 |
25.2-(7.8-2.6)×1.3 | 14.08÷[0.8×(7.93-2.43)]. |
125×8= | 25×4= | 25×8= | 16×5= | 4.35÷100= | 0.08×100= | 0.67×1000= |