问题
解答题
|
答案
(1)
=68 102
=68÷34 102÷34
;2 3
(2)1:0.75
=1:3 5
=(1×5):(
×5)3 5
=5:3;
(3)
:1 3 4 5
=(
×1 3
):(5 4
×4 5
)5 4
=
:15 12
=5:12.
|
(1)
=68 102
=68÷34 102÷34
;2 3
(2)1:0.75
=1:3 5
=(1×5):(
×5)3 5
=5:3;
(3)
:1 3 4 5
=(
×1 3
):(5 4
×4 5
)5 4
=
:15 12
=5:12.