4.4
×0.5×0.2=[
]|
A .4 |
B .13.7 |
|
C .0.44 |
D .26 |
16.7
-1.7-1.3=[
]|
A .4 |
B .13.7 |
|
C .0.44 |
D .26 |
30.4
减去9.85的差再乘1.6,积是[
]|
A .15.76 |
B .20.55 |
|
C .32.88 |
D .28.8 |
35
+14.56÷2.24=[
]|
A .6.2 |
B .17.64 |
|
C .41.5 |
D .44 |
用简便方法计算.
5.4
×1.5+1.5×4.6=[
]|
A .8.42 |
B .15 |
|
C .1524 |
D .28.2 |
用简便方法计算.
15.24
×99+15.24=[
]|
A .8.42 |
B .15 |
|
C .1524 |
D .28.2 |
用简便方法计算.
13.75
-(1.58+3.75)=[
]|
A .8.42 |
B .15 |
|
C .1524 |
D .28.2 |
用简便方法计算.
40
×28.2×0.025=[
]|
A .8.42 |
B .15 |
|
C .1524 |
D .28.2 |
1.8
×1.02进行简便运算应用的是[
]|
A .乘法分配律 |
B .乘法交换律 |
|
C .乘法结合律 |
D .加法交换律 |
比
6的1.2倍少4的数的正确算式是[
]|
A .6×1.2+4 |
B .(6+4)×1.2 |
|
C .6×1.2-4 |
D .(6-4)×1.2 |