问题
解答题
化简下列各比.
2.4:0.42 10.2:17. |
答案
(1)
:1 8
,3 4
=(
×8):(1 8
×8),3 4
=1:6;
(2)2.4:0.42,
=(2.4×
):(0.42×50 3
),50 3
=40:7;
(3)10.2:17,
=(10.2×5):(17×5),
=51:85,
=(51÷17):(85÷17),
=3:5.
化简下列各比.
2.4:0.42 10.2:17. |
(1)
:1 8
,3 4
=(
×8):(1 8
×8),3 4
=1:6;
(2)2.4:0.42,
=(2.4×
):(0.42×50 3
),50 3
=40:7;
(3)10.2:17,
=(10.2×5):(17×5),
=51:85,
=(51÷17):(85÷17),
=3:5.