题目内容

用你喜欢的方法计算
(1)275-450÷18
(2)
3
4
-
2
7
+
1
4
-
5
7

(3)
9
25
÷6+1÷6×
6
25

(4)
1
6
×
2
3
÷(
4
5
-
8
15
)
(1)275-450÷18,
=275-25,
=250;

(2)
3
4
-
2
7
+
1
4
-
5
7

=(
3
4
+
1
4
)-(
2
7
+
5
7
),
=1-1,
=0;

(3)
9
25
÷6+1÷6×
6
25

=(
9
25
+
6
25
)×
1
6

=
3
5
×
1
6

=
1
10


(4)
1
6
×
2
3
÷(
4
5
-
8
15
)

=
1
6
×
2
3
÷
4
15

=
1
9
÷
4
15

=
5
12
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