用简便方法算
24×0.25=
[ ]
|
A.6.6 |
B.0.6 |
|
C.6 |
D.66 |
用简便方法算
0.75×102=
[ ]
|
A.76.5 |
B.7.65 |
|
C.66.5 |
D.765 |
用简便方法算
2.6×3.5+7.4×3.5=
[ ]
|
A.3.5 |
B.0.35 |
|
C.25 |
D.35 |