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计算题.1112×946÷2223712÷23+512÷23(25+25×99)÷25[1÷(34+13)]×34.

题目详情
计算题.
11
12
×
9
46
÷
22
23
7
12
÷
2
3
+
5
12
÷
2
3
2
5
+
2
5
×99)÷
2
5
[1÷(
3
4
+
1
3
)]×
3
4
▼优质解答
答案和解析
(1)
11
12
×
9
46
÷
22
23

=
33
184
÷
22
23

=
3
16


(2)
7
12
÷
2
3
+
5
12
÷
2
3

=(
7
12
+
5
12
)×
3
2

=1×
3
2

=1.5;

(3)(
2
5
+
2
5
×99)÷
2
5

=
2
5
×(1+99)÷
2
5

=(
2
5
÷
2
5
)×(1+99)
=1×100
=100;

(4)[1÷(
3
4
+
1
3
)]×
3
4

=[1÷
13
12
3
4

=
12
13
×
3
4

=
9
13