| 9.21×3.8=34.998 5.8×2.5=14.5 0.31×0.99=0.3069 7.05×0.84=5.922 40.9×8.7=355.83 0.O8×2.4=0.192 |
(1)
9 . 2 1
× 3 . 8
————
7 3 6 8
2 7 6 3
————
3 4.9 9 8
(2)
5 . 8
× 2 . 5
————
2 9 0
1 1 6
————
1 4. 5 0
谢谢!!!