3.直接写得数
| 3.5×0.2= | 10÷0.5= | 6×0.25= | 0.63÷0.9= |
| 1.8×0.4= | 3.5×0.1= | 3.6÷0.09= | 200×0.04= |
| 12-1.2= | 2.5-1.37= | 5.5÷0.11= | 12.5×8= |
| 1.2×5= | 3.9×0.01= | 0.35÷5= | 1.2÷0.3= |
| 0.56÷0.8= | 7.2÷0.9= | 0.36+0.64= | 8.52÷10= |
2.有一根木头,它的长度是12米长,要把它平均分成6段,每锯下一段需要4分钟的时间,锯完这根木头一共需要( )分钟.
| A. | 20分钟 | B. | 24分钟 | C. | 28分钟 |
15.下列各数中,循环小数是( )
0 126662 126670 126676 126680 126686 126688 126692 126698 126700 126706 126712 126716 126718 126722 126728 126730 126736 126740 126742 126746 126748 126752 126754 126756 126757 126758 126760 126761 126762 126764 126766 126770 126772 126776 126778 126782 126788 126790 126796 126800 126802 126806 126812 126818 126820 126826 126830 126832 126838 126842 126848 126856 199269
| A. | 0.7777 | B. | 1.5353… | C. | 3.1415926… |