问题 解答题
计算下面各题,能简算的要简算.
30×(
2
5
+
1
6

98×
4
7
+98×
3
7

1
3
-
1
4
)÷
1
2
+
5
6
1
2
+
1
3
+
1
4
)×24
4
9
×
1
6
+
5
9
÷6
13
12
-(
1
12
+
1
5
答案

(1)30×(

2
5
+
1
6
),

=30×

2
5
+30×
1
6

=12+5,

=17;

(2)98×

4
7
+98×
3
7

=98×(

4
7
+
3
7
),

=98×1,

=98;

(3)(

1
3
-
1
4
)÷
1
2
+
5
6

=

1
12
÷
1
2
+
5
6

=

1
6
+
5
6

=1;

(4)(

1
2
+
1
3
+
1
4
)×24,

=

1
2
×24+
1
3
×24+
1
4
×24,

=12+8+6,

=26;

(5)

4
9
×
1
6
+
5
9
÷6,

=

4
9
×
1
6
+
5
9
×
1
6

=

1
6
×(
5
9
+
4
9
),

=

1
6
×1,

=

1
6

(6)

13
12
-(
1
12
+
1
5
),

=

13
12
-
1
12
-
1
5

=1-

1
5

=

4
5

选择题
填空题