10.口算
4.3÷0.1= | 0.125×8= | 8.7÷1.2= | 1.5÷2= | 9.6-0.06= |
80×0.9= | 6.2-3.9= | 1÷2.5= | 0.3×0.1= | 72.8÷0.8= |
9.下面各式中,是方程的有( )
0 164583 164591 164597 164601 164607 164609 164613 164619 164621 164627 164633 164637 164639 164643 164649 164651 164657 164661 164663 164667 164669 164673 164675 164677 164678 164679 164681 164682 164683 164685 164687 164691 164693 164697 164699 164703 164709 164711 164717 164721 164723 164727 164733 164739 164741 164747 164751 164753 164759 164763 164769 164777 199269
A. | 3.2χ-10 | B. | 15+χ=21.2 | C. | 4χ+1.8>9 | D. | 0.6×1.2=0.72 |