计算下面各题.3+1.5÷2.5÷4 8-4

2025-04-19 16:58:33
推荐回答(1个)
回答1:

(1)3+1.5÷2.5÷4,
=3+0.6÷4,
=3+0.15,
=3.15;

(2)8-4.4×0.25,
=8-1.1,
=6.9;

(3)120+600÷24,
=120+25,
=145;

(4)

3
5
×6÷
2
15

=
18
5
×
15
2

=27;

(5)(
10
11
-
5
6
)×11×6,
=
10
11
×11×6-
5
6
×11×6,
=60-55,
=5;

(6)
1
6
÷(
3
4
-
1
3
)÷
4
5

=
1
6
÷(
9
12
-
4
12
)×
5
4

=
1
6
÷
5
12
×
5
4

=
1
6
×
12
5
×
5
4

=
1
2