Question

豎式計(jì)算． 1.5×2.4=	1.08×2.5=	1.2×0.35=
0.72×3.1=	4.6×1.02=	3.05×1.4=

Answer 1

分析：本題根據(jù)小數(shù)乘法的運(yùn)算法則列豎式計(jì)算即可．

解答：解：1.5×2.4=3.6
 

1.5 × 2.4

  

.

6  0

3  0

3.6  0

1.08×2.5=2.7
 

1.0  8 ×    2.5

   

.

5  4  0

2  1  6

2.7  0  0

1.2×0.35=0.42

1.2 × 0.3  5

 

.

6  0

3  6

0.4  2  0

0.72×3.1=2.232
 

0.7  2 ×    3.1

  

.

7  2

2  1  6

2.2  3  2

4.6×1.02=4.692
 

1.0  2 ×    4.6

 

.

6  1  2

4  0  8

4.6  9  2

3.05×1.4=4.27
  

3.0  5 ×    1.4

 

.

1  2  2  0

3  0  5

4.2  7  0

點(diǎn)評(píng)：在列豎式計(jì)算小數(shù)乘法算式時(shí)，要注意小數(shù)點(diǎn)位置的變化．