题目内容
计算:
①
÷
×
②2
-
-(
+
-2
)
③(6
-2x
)÷
④
+(-5
+3
)(-5
-3
)
①
1
|
2
|
1
|
②2
|
|
18 |
2 |
|
③(6
|
|
| ||
3 |
④
(3-π)2 |
2 |
5 |
2 |
5 |
①原式=
=1;
②原式=
-
-3
-
+
=-4
+
;
③原式=(3
-2
)•
=3;
④原式=π-3+(50-45)=π-8.
|
②原式=
| ||
2 |
| ||
2 |
2 |
2 |
2
| ||
3 |
2 |
2
| ||
3 |
③原式=(3
x |
x |
3 | ||
|
④原式=π-3+(50-45)=π-8.
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