题目内容
|
|
| 4:
| ||||||||||
| 18:27 |
| 1.6:2.4 | 0.625:
|
(1)
:
,
=(
×24):(
×24),
=21:20;
:
,
=
÷
,
=
×
,
=
;
(2)
,
=1.6:0.04,
=(1.6÷0.04):(0.04÷0.04),
=40:1;
=40;
(3)
:6,
=(
×8):(6×8),
=3:38,
=(3÷3):(48÷3),
=1:16;
:6,
=
÷6,
=
×
,
=
;
(4)4:
,
=(4×2):(
×2),
=8:1;
4:
,
=4÷
,
=4×2,
=8;
(5)18:27,
=(18÷9):(27÷9),
=2:3;
18:27,
=18÷27,
=
;
(6)
:
,
=(
×10):(
×10),
=4:3;
:
,
=
÷
,
=
×
,
=
;
(7)1.6:2.4,
=(1.6÷0.8):(2.4÷0.8),
=2:3;
1.6:2.4,
=1.6÷2.4,
=
;
(8)0.625:
,
=
:
,
=(
×8):(
×8),
=5:6;
0.625:
,
=
÷
,
=
×
,
=
.
| 7 |
| 8 |
| 5 |
| 6 |
=(
| 7 |
| 8 |
| 5 |
| 6 |
=21:20;
| 7 |
| 8 |
| 5 |
| 6 |
=
| 7 |
| 8 |
| 5 |
| 6 |
=
| 7 |
| 8 |
| 6 |
| 5 |
=
| 21 |
| 20 |
(2)
| 1.6 |
| 0.04 |
=1.6:0.04,
=(1.6÷0.04):(0.04÷0.04),
=40:1;
| 1.6 |
| 0.04 |
(3)
| 3 |
| 8 |
=(
| 3 |
| 8 |
=3:38,
=(3÷3):(48÷3),
=1:16;
| 3 |
| 8 |
=
| 3 |
| 8 |
=
| 3 |
| 8 |
| 1 |
| 6 |
=
| 1 |
| 16 |
(4)4:
| 1 |
| 2 |
=(4×2):(
| 1 |
| 2 |
=8:1;
4:
| 1 |
| 2 |
=4÷
| 1 |
| 2 |
=4×2,
=8;
(5)18:27,
=(18÷9):(27÷9),
=2:3;
18:27,
=18÷27,
=
| 2 |
| 3 |
(6)
| 2 |
| 5 |
| 3 |
| 10 |
=(
| 2 |
| 5 |
| 3 |
| 10 |
=4:3;
| 2 |
| 5 |
| 3 |
| 10 |
=
| 2 |
| 5 |
| 3 |
| 10 |
=
| 2 |
| 5 |
| 10 |
| 3 |
=
| 4 |
| 3 |
(7)1.6:2.4,
=(1.6÷0.8):(2.4÷0.8),
=2:3;
1.6:2.4,
=1.6÷2.4,
=
| 2 |
| 3 |
(8)0.625:
| 3 |
| 4 |
=
| 5 |
| 8 |
| 3 |
| 4 |
=(
| 5 |
| 8 |
| 3 |
| 4 |
=5:6;
0.625:
| 3 |
| 4 |
=
| 5 |
| 8 |
| 3 |
| 4 |
=
| 5 |
| 8 |
| 4 |
| 3 |
=
| 5 |
| 6 |
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