9.小明吃了一个苹果的一半的一半,他吃了这个苹果的( )
A. | $\frac{1}{2}$ | B. | $\frac{1}{4}$ | C. | $\frac{2}{2}$ |
5.用竖式计算.
0 159713 159721 159727 159731 159737 159739 159743 159749 159751 159757 159763 159767 159769 159773 159779 159781 159787 159791 159793 159797 159799 159803 159805 159807 159808 159809 159811 159812 159813 159815 159817 159821 159823 159827 159829 159833 159839 159841 159847 159851 159853 159857 159863 159869 159871 159877 159881 159883 159889 159893 159899 159907 199269
1008-219= | 585+192= | 729-345= |
58÷7= | 82÷9= | 56÷6= |
123×6= | 175×4= | 202×7= |