10.若被减数,减数与差这三个数的和为48,且减数是差的2倍,则减数为( )
| A. | 6 | B. | 8 | C. | 12 | D. | 16 |
9.两根同样长的竹竿,如果第一根截掉$\frac{1}{5}$米后,第二根截掉$\frac{1}{5}$,这两根竹竿相比较( )
0 158673 158681 158687 158691 158697 158699 158703 158709 158711 158717 158723 158727 158729 158733 158739 158741 158747 158751 158753 158757 158759 158763 158765 158767 158768 158769 158771 158772 158773 158775 158777 158781 158783 158787 158789 158793 158799 158801 158807 158811 158813 158817 158823 158829 158831 158837 158841 158843 158849 158853 158859 158867 199269
| A. | 第一根长 | B. | 第二根长 | C. | 同样长 | D. | 无法确定哪根长 |