1．
0 161595 161603 161609 161613 161619 161621 161625 161631 161633 161639 161645 161649 161651 161655 161661 161663 161669 161673 161675 161679 161681 161685 161687 161689 161690 161691 161693 161694 161695 161697 161699 161703 161705 161709 161711 161715 161721 161723 161729 161733 161735 161739 161745 161751 161753 161759 161763 161765 161771 161775 161781 161789 199269
| 口算． 10-5.28= | 2.07-0.2= | 1÷0.25×4= | 2.5×4= | 1.2×0.5= |
| 42.9÷6= | 0.53÷0.5= | 0.3÷0.1= | 1÷0.5= | 1.4×11= |
| 3.07×100= | 0.36÷0.6= |
为了身体健康，每人每天最少要喝一盒牛奶．