题目内容
计算.
(1)
-
÷2+(3-
)(1+
);
(2)
÷
×
.
(1)
48 |
54 |
3 |
1 | ||
|
(2)
1
|
2
|
1
|
(1)
-
÷2+(3-
)(1+
);
=4
-3
÷2+
(3-
)(3+
)
=4
-
+2;
(2)
÷
×
=
•
•
=1.
48 |
54 |
3 |
1 | ||
|
=4
3 |
6 |
1 |
3 |
3 |
3 |
=4
3 |
3
| ||
2 |
(2)
1
|
2
|
1
|
=
|
|
|
=1.
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