列式计算(1)12112减去3个56的差,除以313,商是多少?(2)8778与它倒数的积减去16,所得的差去除12,

2025-03-22 03:19:49
推荐回答(1个)
回答1:

(1)(12
1
12
-
5
6
×3)÷3
1
3

=(12
1
12
-
5
2
)÷
10
3

=
115
12
×
3
10

=
23
8

答:商是
23
8


(2)
1
2
÷(
87
78
×
78
87
-
1
6

=
1
2
÷(1-
1
6

=
1
2
÷
5
6

=
1
2
×
6
5

=
3
5

答:商是
3
5