| 直接写得数,看谁快又准. | 5-0.25+0.75=________; | 9-0.09=________; | 0.4×16×0.25=________; |
| 4.5×102=________; | 23.9÷8≈________; | 1÷ | |
| 0.42-0.32=________; | 13×(2+ | 7× | 0.9+99×0.9=________. |
| 直接写得数,看谁快又准. | 5-0.25+0.75=________; | 9-0.09=________; | 0.4×16×0.25=________; |
| 4.5×102=________; | 23.9÷8≈________; | 1÷ | |
| 0.42-0.32=________; | 13×(2+ | 7× | 0.9+99×0.9=________. |