题目内容

用你喜欢的方法计算:
7
10
÷9+
3
10
×
1
9
4-
7
15
-
8
15
[2-(
3
4
+
1
3
)]÷
2
3
14×(
4
7
+
1
2
)÷
3
2

7
10
÷9+
3
10
×
1
9

=
7
10
×
1
9
+
3
10
×
1
9

=
1
9
×(
7
10
+
3
10

=
1
9
×1
=
1
9


②4-
7
15
-
8
15

=4-(
7
15
+
8
15

=4-1
=3;


③[2-(
3
4
+
1
3
)]÷
2
3

=[2-
13
12
3
2

=
11
12
×
3
2

=1
3
8


④14×(
4
7
+
1
2
)÷
3
2

=(14×
4
7
+14×
1
2
)×
2
3

=15×
2
3

=10.
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