化简比、求比值.14035
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化简比、求比值.
140 |
35 |
(1)
140
35=140:35,
=(140÷35):(35÷35),
=4:1;
140
35=140÷35=4;
(2)0.4:
2
3,
=
2
5:
2
3,
=(
2
5×
15
2):(
2
3×
15
2),
=3:5;
0.4:
2
3=0.4÷
2
3,
=0.4×
3
2,
=0.6;
(3)0.3吨:150千克,
=300:150,
=(300÷150):(150÷150),
=2:1;
0.3吨:150千克,
=300:150,
=300÷150,
=2;
(4)0.6:
2
3,
=
3
5:
2
3,
=(
3
5×15):(
2
3×15),
=9:10;
0.6:
2
3,
=0.6÷
2
3,
=0.6×
3
2,
=0.9.
140
35=140:35,
=(140÷35):(35÷35),
=4:1;
140
35=140÷35=4;
(2)0.4:
2
3,
=
2
5:
2
3,
=(
2
5×
15
2):(
2
3×
15
2),
=3:5;
0.4:
2
3=0.4÷
2
3,
=0.4×
3
2,
=0.6;
(3)0.3吨:150千克,
=300:150,
=(300÷150):(150÷150),
=2:1;
0.3吨:150千克,
=300:150,
=300÷150,
=2;
(4)0.6:
2
3,
=
3
5:
2
3,
=(
3
5×15):(
2
3×15),
=9:10;
0.6:
2
3,
=0.6÷
2
3,
=0.6×
3
2,
=0.9.