题目内容
把下面各比化成最简整数比.
| 4.2:
|
| 360:140. |
(1)
:
=(
×40):(
×40)
=16:35;
(2)4.2:
=4.2:0.1
=(4.2×10):(0.1×10)
=42:1;
(3)
=
=
;
(4)360:140
=(360÷20):(140÷20)
=18:7.
| 2 |
| 5 |
| 7 |
| 8 |
=(
| 2 |
| 5 |
| 7 |
| 8 |
=16:35;
(2)4.2:
| 1 |
| 10 |
=4.2:0.1
=(4.2×10):(0.1×10)
=42:1;
(3)
| 92 |
| 69 |
=
| 92÷23 |
| 69÷23 |
=
| 4 |
| 3 |
(4)360:140
=(360÷20):(140÷20)
=18:7.
练习册系列答案
相关题目