3.在横线里填上“>”、“<”或“=”.
| 36.25÷0.25>36.25 | 7.5÷1=7.5 |
| 1.03÷1.5<1.03 | 0.9×1.8<1.8 |
| 5.7÷0.5=0.57÷0.05 | 3.7×100>3.7÷100 |
1.把表填完整.
| 被除数 | 255 | 25.5 | 2.55 | 2550 |
| 除 数 | 17 | 1.7 | 0.17 | 170 |
| 商 | 15 | 15 | 15 | 15 |
19.7.2×7.91的积保留一位小数是( )
| A. | 57 | B. | 56.9 | C. | 57.0 |
18.下列数中,是循环小数的是( )
| A. | 5.07676… | B. | 3.141592… | C. | 4.282828 |
17.下面算式正确的是( )
0 128691 128699 128705 128709 128715 128717 128721 128727 128729 128735 128741 128745 128747 128751 128757 128759 128765 128769 128771 128775 128777 128781 128783 128785 128786 128787 128789 128790 128791 128793 128795 128799 128801 128805 128807 128811 128817 128819 128825 128829 128831 128835 128841 128847 128849 128855 128859 128861 128867 128871 128877 128885 199269
| A. | 4.8×0.9>4.8 | B. | 4.8÷0.9>4.8 | C. | 4.8÷1.1>4.8 |