题目内容

脱式计算,怎样简便就怎样算
(
1
2
-
1
4
1
3
+
1
6

3
4
÷
9
10
-
5
14
×
7
15

8
9
×[
3
4
-(
7
16
-
1
4
)]

④102×
98
101

4
5
-
5
9
+
1
5
-
4
9

8
13
÷7+
1
7
×
5
13
①(
1
2
-
1
4
)÷
1
3
+
1
6

=
1
4
×3+
1
6

=
9
12
+
2
12

=
11
12


3
4
÷
9
10
-
5
14
×
7
15

=
3
4
×
10
9
-
5
14
×
7
15

=
5
6
-
1
6

=
2
3


8
9
×[
3
4
-(
7
16
-
1
4
)]

=
8
9
×[
3
4
-
3
16
],
=
8
9
×
9
16

=
1
2


④102×
98
101

=(101+1)×
98
101

=101×
98
101
+1×
98
101

=98+
98
101

=98
98
101


4
5
-
5
9
+
1
5
-
4
9

=(
4
5
+
1
5
)-(
5
9
+
4
9
),
=1-1,
=0;

8
13
÷7+
1
7
×
5
13

=
8
13
×
1
7
+
1
7
×
5
13

=
1
7
×
5
13
+
8
13
),
=
1
7
×1

=
1
7
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