题目内容
| 先估一估,再计算. 1.O8÷1.8= | 12.24÷24= | 7.2÷3.6= |
| 0.72÷1.5= | 0.6×8= | 1.24×0.4= |
(1)1.O8÷1.8≈1÷2=0.5,
1.08÷1.8=0.6
;
(2)12.24÷24≈12÷20=0.6,
12.24÷24=0.51
;
(3)7.2÷3.6≈7÷3.5=2,
7.2÷3.6=2,

(4)0.72÷1.5≈0.75÷1.5=0.5,
0.72÷1.5=0.48
;
(5)0.6×8≈0.5×8=4,
0.6×8=4.8;

(6)1.24×0.4≈1×0.5=0.5,
1.24×0.4=0.496
.
1.08÷1.8=0.6
(2)12.24÷24≈12÷20=0.6,
12.24÷24=0.51
(3)7.2÷3.6≈7÷3.5=2,
7.2÷3.6=2,
(4)0.72÷1.5≈0.75÷1.5=0.5,
0.72÷1.5=0.48
(5)0.6×8≈0.5×8=4,
0.6×8=4.8;
(6)1.24×0.4≈1×0.5=0.5,
1.24×0.4=0.496
练习册系列答案
相关题目