问题
解答题
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答案
16:20,
=(16÷4):(20÷4),
=4:5;
2:
,4 3
=(2×3):(
×3),4 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
=(
×200):(81 100
×200),9 200
=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
=(
×6):(2 3
×6),1 2
=4:3.