题目内容

化简比.
16:20
2:
4
3
0.24:4
81
100
9
200
0.9:0.03
2
3
1
2
16:20,
=(16÷4):(20÷4),
=4:5;

2:
4
3

=(2×3):(
4
3
×3),
=6:4;
=(6÷2):(4÷2),
=3:2;

0.24:4,
=(0.24×100):(4×100),
=24:400,
=(24÷8):(400÷8),
=3:50;

81
100
9
200

=(
81
100
×200):(
9
200
×200),
=162:9,
=(162÷9):(9÷9),
=18:1;

0.9:0.03,
=(0.9×100):(0.03×100),
=90:3,
=(90÷3):(3÷3),
=30:1;

2
3
1
2

=(
2
3
×6):(
1
2
×6),
=4:3.
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