问题 解答题
能简算的要简算.
3
4
×
6
13
÷
9
26
4
9
÷(
1
3
+
1
3
5
9
×7+
5
9
×11
1
2
+
2
3
+
3
4
)×24
4
25
×99+
4
25
3
5
×
2
3
+
2
5
÷1
1
2
答案

(1)

3
4
×
6
13
÷
9
26

=

3
4
×
6
13
×
26
9

=1;

(2)

4
9
÷(
1
3
+
1
3
),

=

4
9
÷
2
3

=

4
9
×
3
2

=

2
3

(3)

5
9
×7+
5
9
×11,

=(7+11)×

5
9

=18×

5
9

=10;

(4)(

1
2
+
2
3
+
3
4
)×24,

=

1
2
×24+
2
3
×24+
3
4
×24,

=12+16+18,

=46;

(5)

4
25
×99+
4
25

=

4
25
×(99+1),

=

4
25
×100,

=16;

(6)

3
5
×
2
3
+
2
5
÷1
1
2

=

3
5
×
2
3
+
2
5
×
2
3

=(

3
5
+
2
5
)×
2
3

=1×

2
3

=

2
3

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单项选择题