问题 解答题
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
答案

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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