问题
解答题
8:12 0.25:0.45
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答案
8:12=8÷12=
=8 12 2 3
0.25:0.45=
:25 100
=45 100
÷25 100
=45 100
×25 100
=100 45
=25 45 5 9
:1 6
=2 5
÷1 6
=2 5
×1 6
=5 2 5 12
:0.75=2 3
:2 3
=75 100
:2 3
=3 4
÷2 3
=3 4
×2 3
=4 3 8 9