用简便方法计算
0.87
×4.5+4.5×0.13=[
]|
A .0.4 |
B .13.9 |
|
C .96 |
D .4.5 |
28.8
÷[(1.6+3.2)×2.5]=[
]|
A .53 |
B .12 |
|
C .21.2 |
D .2.4 |
(
28.8÷1.6+3.2)×2.5=[
]|
A .53 |
B .12 |
|
C .21.2 |
D .2.4 |
28.8
÷(1.6+3.2×2.5)=[
]|
A .18 |
B .26 |
|
C .3 |
D .15 |
28.8
÷(1.6+3.2)×2.5=[
]|
A .18 |
B .26 |
|
C .3 |
D .15 |
28.8
÷1.6+3.2×2.5=[
]|
A .18 |
B .26 |
|
C .3 |
D .15 |
27.3
除以4.2的商,减去2.3,所得的差再与0.5相乘,积是[
]|
A .6.5 |
B .4.2 |
|
C .2.1 |
D .1.15 |