14.直接写出得数.
25÷5×8= | 2.5-0.8-1.2= | 83-6×7= | 4.6-2.7+7= |
10-0.1= | 125×8= | 56+99= | 450÷10= |
6×300= | 37÷100= | 0.76×10= | 0÷72= |
13.把一根18米长的木头每3米截成一段,最多需截( )次.
A. | 6 | B. | 5 | C. | 4 |
12.在下面的数中,去掉“0”而大小不变的数是( )
A. | 7.003 | B. | 9.860 | C. | 20.04 |
11.0.28扩大10倍后与原数相比增加了( )
0 158591 158599 158605 158609 158615 158617 158621 158627 158629 158635 158641 158645 158647 158651 158657 158659 158665 158669 158671 158675 158677 158681 158683 158685 158686 158687 158689 158690 158691 158693 158695 158699 158701 158705 158707 158711 158717 158719 158725 158729 158731 158735 158741 158747 158749 158755 158759 158761 158767 158771 158777 158785 199269
A. | 2.52 | B. | 2.8 | C. | 10 |