11.直接写得数.
$\frac{1}{7}$×14= | $\frac{3}{4}$÷2.7= | $\frac{5}{7}$$÷\frac{1}{2}$= | 37.5%×$\frac{4}{9}$= |
$\frac{7}{12}$-0.25= | $\frac{2}{9}$×0= | 4$÷\frac{4}{7}$= | $\frac{1}{5}$$÷\frac{5}{8}$×5= |
10.计算47×$\frac{5}{46}$时,运用( )计算比较简便.
0 154699 154707 154713 154717 154723 154725 154729 154735 154737 154743 154749 154753 154755 154759 154765 154767 154773 154777 154779 154783 154785 154789 154791 154793 154794 154795 154797 154798 154799 154801 154803 154807 154809 154813 154815 154819 154825 154827 154833 154837 154839 154843 154849 154855 154857 154863 154867 154869 154875 154879 154885 154893 199269
A. | 乘法交换律 | B. | 乘法结合律 | C. | 乘法分配律 |