在下面每个算式的答题框里填上相同的两个数,使算式两边相等.3× =1 6× =3 5× =2 6× =4 6× =l 7× =3 .
0.3÷ =5:4=.
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85%==34÷ = :200= 折.
=3÷ = :8=.
如果A:B=2:5,那么B是A的 .