用竖式计算.(1)5.08×0.65(2)80.4

2024-11-20 21:23:24
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回答(1):

(1)5.08×0.65=3.302,
5.08
× 0.65

.
2540
3048

.
3.3020


(2)80.4×0.35=28.14,
80.4
× 0.35

.
4020
2412

.
28.140


(3)54.68-12.8=41.88,
54.68
- 12.8

.
41.88


(4)19.92+420.26=440.18,
19.92
+ 420.26

.
440.18