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化简比并求比值.(1)12:30(2)0.4:3.2(3)23:518.
题目详情
化简比并求比值. (1)12:30 | (2)0.4:3.2 | (3)
|
化简比并求比值. (1)12:30 | (2)0.4:3.2 | (3)
|
(1)12:30
2 |
3 |
5 |
18 |
(1)12:30
2 |
3 |
5 |
18 |
2 |
3 |
5 |
18 |
2 |
3 |
5 |
18 |
5 |
18 |
▼优质解答
答案和解析
(1)12:30,
=(12÷6):(30÷6),
=2:5;
12:30,
=2:5,
2÷5,
=
.
(2)0.4:3.2,
=(0.4×5):(3.2×5),
=2:16,
=1:8;
0.4:3.2,
=1:8,
=1÷8,
=
.
(3)
:
,
=(
×18):(
×18),
=12:5;
:
,
=12:5,
=12÷5,
=
.
2 2 25 5 5.
(2)0.4:3.2,
=(0.4×5):(3.2×5),
=2:16,
=1:8;
0.4:3.2,
=1:8,
=1÷8,
=
.
(3)
:
,
=(
×18):(
×18),
=12:5;
:
,
=12:5,
=12÷5,
=
.
1 1 18 8 8.
(3)
:
,
=(
×18):(
×18),
=12:5;
:
,
=12:5,
=12÷5,
=
.
2 2 23 3 3:
,
=(
×18):(
×18),
=12:5;
:
,
=12:5,
=12÷5,
=
.
5 5 518 18 18,
=(
×18):(
×18),
=12:5;
:
,
=12:5,
=12÷5,
=
.
2 2 23 3 3×18):(
×18),
=12:5;
:
,
=12:5,
=12÷5,
=
.
5 5 518 18 18×18),
=12:5;
:
,
=12:5,
=12÷5,
=
.
2 2 23 3 3:
,
=12:5,
=12÷5,
=
.
5 5 518 18 18,
=12:5,
=12÷5,
=
.
12 12 125 5 5.
=(12÷6):(30÷6),
=2:5;
12:30,
=2:5,
2÷5,
=
2 |
5 |
(2)0.4:3.2,
=(0.4×5):(3.2×5),
=2:16,
=1:8;
0.4:3.2,
=1:8,
=1÷8,
=
1 |
8 |
(3)
2 |
3 |
5 |
18 |
=(
2 |
3 |
5 |
18 |
=12:5;
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
2 |
5 |
(2)0.4:3.2,
=(0.4×5):(3.2×5),
=2:16,
=1:8;
0.4:3.2,
=1:8,
=1÷8,
=
1 |
8 |
(3)
2 |
3 |
5 |
18 |
=(
2 |
3 |
5 |
18 |
=12:5;
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
1 |
8 |
(3)
2 |
3 |
5 |
18 |
=(
2 |
3 |
5 |
18 |
=12:5;
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
2 |
3 |
5 |
18 |
=(
2 |
3 |
5 |
18 |
=12:5;
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
5 |
18 |
=(
2 |
3 |
5 |
18 |
=12:5;
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
2 |
3 |
5 |
18 |
=12:5;
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
5 |
18 |
=12:5;
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
2 |
3 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
5 |
18 |
=12:5,
=12÷5,
=
12 |
5 |
12 |
5 |
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