问题
解答题
求比值并化简比.
|
答案
1.25:4.5,
=1.25÷4.5,
=
;5 18
1.25:4.5,
=(1.25×100):(4.5×100),
=125:450,
=(125÷25):(450÷25),
=5:18;
32:56,
=32÷56,
=
;4 7
32:56,
=(32÷8):(56÷8),
=4:7;
:5 6
,7 8
=
÷5 6
,7 8
=
;20 21
:5 6
,7 8
=(
×24):(5 6
×24),7 8
=20:21.