题目内容
先化成最简整数比,再求比值.
6:18
0.35:0.45
:
.
6:18
0.35:0.45
1 |
3 |
1 |
6 |
(1)6:18,
=(6÷6):(18÷6),
=1:3;
6:18,
=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,
=
;
(3)
:
,
=(
×6):(
×6),
=2:1;
:
,
=2:1,
=2÷1,
=2.
=(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 |
1 |
6 |
=2:1;
1 |
3 |
1 |
6 |
=2:1,
=2÷1,
=2.
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