问题
解答题
化简比. (1)3.2:0.4 (2)6米:70分米 (3)
(4)24:36. |
答案
(1)3.2:0.4,
=(3.2×10):(0.4×10),
=32:4,
=(32÷4):(4÷4),
=8:1;
(2)6米:70分米,
=60分米:70分米,
=60:70,
=(60÷10):(70÷10),
=6:7;
(3)
:3 4 9 10
=(
×3 4
):(20 3
×9 10
),20 3
=5:6,
(4)24:36,
=(24÷12):(36÷12),
=2:3.