问题
解答题
化简下列各比,并求出比值. (1)
(2)3:2.5 (3)6.75吨:50千克 (4)3.5:
|
答案
(1)
:601 5
=(
×5):(60×5)1 5
=1:300;
:601 5
=
÷601 5
=
;1 300
(2)3:2.5
=(3×2):(2.5×2)
=6:5;
3:2.5
=3÷2.5
=
;6 5
(3)6.75吨:50千克
=(6.75×1000千克):50千克
=6750:50
=(6750÷50):(50÷50)
=135:1;
6.75吨:50千克
=(6.75×1000千克)÷50千克
=6750÷50
=135;
(4)3.5:7 8
=(3.5×
):(8 7
×7 8
)8 7
=4:1;
3.5:7 8
=3.5÷7 8
=4.