题目内容
(1)
×
-21
(2)(3
-2
+
)÷(2
)
50 |
8 |
(2)(3
12 |
|
48 |
3 |
(1)原式=
-21
=20-21
=-1;
(2)原式=(6
-
+4
)÷2
=
÷2
=
.
400 |
=20-21
=-1;
(2)原式=(6
3 |
2 |
3 |
3 |
3 |
3 |
=
28 |
3 |
3 |
3 |
=
14 |
3 |
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题目内容
50 |
8 |
12 |
|
48 |
3 |
400 |
3 |
2 |
3 |
3 |
3 |
3 |
28 |
3 |
3 |
3 |
14 |
3 |