问题 解答题
先化成最简整数比,再求比值.
6:18
0.35:0.45
1
3
1
6
答案

(1)6:18,

=(6÷6):(18÷6),

=1:3;

6:18,

=1:3,

=1÷3,

=

1
3

(2)0.35:0.45,

=(0.35×20):(0.45×20),

=7:9;

0.35:0.45,

=7:9,

=7÷9,

=

7
9

(3)

1
3
1
6

=(

1
3
×6):(
1
6
×6),

=2:1;

1
3
1
6

=2:1,

=2÷1,

=2.

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