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37:1528 0.48:45 14m2:10dm2.

编辑:chaxungu时间:2026-04-27 14:12:10分类:小学数学题库

3
7
15
28
0.48:
4
5
1
4
m2:10dm2.
(1)
3
7
15
28

=(
3
7
×28):(
15
28
×28),
=12:15,
=4:5;
3
7
15
28

=4:5,
=4÷5,
=
4
5


(2)0.48:
4
5

=0.48:0.8,
=(0.48×50):(0.8×50),
=24:40,
=3:5;
0.48:
4
5

=3:5,
=3÷5,
=
3
5


(3)
1
4
m2:10dm2,
=25dm2:10dm2
=(25÷5):(10÷5),
=5:2;
1
4
m2:10dm2
=5:2,
=5÷2,
=
5
2