11.直接写出得数.
3.14×9= | 0.36÷60%= | $\frac{3}{4}$+75%= | 15%÷3= |
10÷5%= | 200×45%= | 3.14×6= | 25%×4= |
9.80增加到100,增加了( )%.
A. | 20 | B. | 40 | C. | 50 | D. | 25 |
8.小红把一个周长为12.56分米的圆形纸片,剪成两个半圆,每个半圆的周长是( )分米.
A. | 9.42 | B. | 6.28 | C. | 10.28 | D. | 8.28 |
7.化简下面各比.
68:17 | 1.2:0.24 | $\frac{1}{20}$:$\frac{1}{40}$ | 0.6:$\frac{2}{5}$ |
2.列竖式计算下面各题.
0 159737 159745 159751 159755 159761 159763 159767 159773 159775 159781 159787 159791 159793 159797 159803 159805 159811 159815 159817 159821 159823 159827 159829 159831 159832 159833 159835 159836 159837 159839 159841 159845 159847 159851 159853 159857 159863 159865 159871 159875 159877 159881 159887 159893 159895 159901 159905 159907 159913 159917 159923 159931 199269
118×16= | 302×25= | 460×20= |
308×50= | 660×20= | 385×24= |