9.口算.
| 0.2+0.3= | 4.8÷3= | 3.8×100= | 940÷100= |
| 0.24÷4= | 50×0.6= | 7÷0.07= | 0.1×0.1= |
| 1-0.83= | 4.5+4.5+4.5= | 0.75÷0.25= | 0.97÷10= |
| 10×0.05= | 3×0.23= | 2.1×0.2= | 0.16-0.09= |
8.在0.8和1.1之间有( )小数.
| A. | 2 | B. | 1 | C. | 3 | D. | 无数 |
7.在下面的数中,( )最接近1.
| A. | 1.1 | B. | 1.01 | C. | 0.999 | D. | 0.9 |
6.甲数是乙数的5倍,甲、乙两数的差是80,乙数是( )
0 141701 141709 141715 141719 141725 141727 141731 141737 141739 141745 141751 141755 141757 141761 141767 141769 141775 141779 141781 141785 141787 141791 141793 141795 141796 141797 141799 141800 141801 141803 141805 141809 141811 141815 141817 141821 141827 141829 141835 141839 141841 141845 141851 141857 141859 141865 141869 141871 141877 141881 141887 141895 199269
| A. | 80 | B. | 20 | C. | 100 |