问题
解答题
求比值. 45%:4.5 0.9:0.36
|
答案
(1)45%:4.5,
=0.45:4.5,
=0.45÷4.5,
=0.1;
(2)0.9:0.36,
=0.9÷0.36,
=2.5;
(3)
4 |
7 |
1 |
7 |
=
4 |
7 |
8 |
7 |
=
4 |
7 |
7 |
8 |
=
1 |
2 |
(4)
1 |
4 |
=0.25吨:375千克,
=250千克:375千克,
=250÷375,
=
2 |
3 |
求比值. 45%:4.5 0.9:0.36
|
(1)45%:4.5,
=0.45:4.5,
=0.45÷4.5,
=0.1;
(2)0.9:0.36,
=0.9÷0.36,
=2.5;
(3)
4 |
7 |
1 |
7 |
=
4 |
7 |
8 |
7 |
=
4 |
7 |
7 |
8 |
=
1 |
2 |
(4)
1 |
4 |
=0.25吨:375千克,
=250千克:375千克,
=250÷375,
=
2 |
3 |