128:34 &nbsp...

128:34 0.54:2.7 0.4米:60厘米 38:56 42:2571.
2025-03-23 12:20:11
推荐回答(1个)
回答1:

(1)128:34,
=128÷34,
=
64
17

128:34,
=(128÷2):(34÷2),
=64:17.

(2)0.54:2.7,
=0.54÷2.7,
=
1
5

0.54:2.7,
=(0.54×50):(2.7×50),
=27:135,
=(27÷27):(135÷27),
=1:5.

(3)0.4米:60厘米,
=40厘米:60厘米,
=40÷60,
=
2
3

0.4米:60厘米,
=40厘米:60厘米,
=(40÷20):(60÷20),
=2:3.

(4)
3
8
5
6

=
3
8
÷
5
6

=
9
20

3
8
5
6

=(
3
8
×24):(
5
6
×24),
=9:20.

(5)42:
25
71

=42÷
25
71

=
2982
25

42:
25
71

=(42×71):(
25
71
×71),
=2982:25.