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化简比1.8:0.45=77:63=25:310=1.2:65=1:18=13:12=25:27=12:120=4:0.8=76:3=

题目详情
化简比
1.8:0.45=77:63=
2
5
3
10
=
1.2:
6
5
=
1:
1
8
=
1
3
1
2
=
2
5
2
7
=
12:120=4:0.8=
7
6
:3=
▼优质解答
答案和解析
1.8:0.45
=(1.8×100):(0.45×100)
=180:45
=(180÷45):(45÷45)
=4:1

77:63
=(77÷7):(63÷7)
=11:9

2
5
3
10

=(
2
5
×10):(
3
10
×10)
=4:3

1.2:
6
5

=(1.2×
5
6
):(
6
5
×
5
6

=1:1


1:
1
8

=(1×8):(
1
8
×8)
=8:1

1
3
1
2

=(
1
3
×6):(
1
2
×6)
=2:3

2
5
2
7

=(
2
5
×
35
2
):(
2
7
×
35
2

=7:5

12:120
=(12÷12):(120÷12)
=1:10

4:0.8
=(4×10):(8×10)
=40:8
=(40÷8):(8÷8)
=5:1

7
6
:3
=(
7
6
×6):(3×6)
=7:18