给下列算式选择正确答案.
[
]|
(1)51-8 |
(2)70-2 |
(3)61-9 |
|||
|
(4)63+5 |
(5)90-20 |
||||
|
A .43 |
B .52 |
C .68 |
D .70 |
||
给下列算式选择正确答案.
[
]|
(1)51-8 |
(2)70-2 |
(3)61-9 |
|||
|
(4)63+5 |
(5)90-20 |
||||
|
A .43 |
B .52 |
C .68 |
D .70 |
||