问题 解答题
1
8
×14÷
7
8
4
5
+
3
10
)÷
3
10
5
6
÷(
1
2
+
5
6
3
4
÷
15
16
÷
5
6
1
100
÷
1
100
4
4
5
×4
3
5
-4
4
5
×3.6
44
45
×46
1
2
+
2
3
+
3
4
)×24.
答案

(1)

1
8
×14÷
7
8

=

1
8
×(14×
8
7
),

=

1
8
×16,

=2;

(2)(

4
5
+
3
10
)÷
3
10

=(

4
5
+
3
10
)×
10
3

=

4
5
×
10
3
+
3
10
×
10
3

=

8
3
+1,

=3

2
3

(3)

5
6
÷(
1
2
+
5
6
),

=

5
6
÷
8
6

=

5
8

(4)

3
4
÷
15
16
÷
5
6

=

3
4
×
16
15
×
6
5

=

4
5
×
6
5

=

24
25

(5)1÷

1
100
÷
1
100

=100×100,

=10000;

(6)4

4
5
×4
3
5
-4
4
5
×3.6,

=4

4
5
×(4
3
5
-3.6),

=4

4
5
×1,

=4

4
5

(7)

44
45
×46,

=

44
45
×(45+1),

=

44
45
×45+
44
45
×1,

=44+

44
45

=44

44
45

(8)(

1
2
+
2
3
+
3
4
)×24,

=

1
2
×24+
2
3
×24+
3
4
×24,

=12+16+18,

=28+18,

=46.

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