问题 解答题
(1)2
2
+
8
-4
1
2

(2)|2-π|-
(3-π)2
+(π-3)0

(3)(
125
-
20
)÷
5

(4)(
3
+
2
)(
3
-
2
)
+
2
×
1
3
3
×
6
答案

(1)原式=2

2
+2
2
-2
2

=2

2

(2)原式=π-2-(π-3)+1

=π-2-π+3+1

=2;

(3)原式=(5

5
-2
5
)÷
5

=3;

(4)原式=3-2+2

=3.

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