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化简下面各比,并求出比值.516:14;4.2:0.8.

题目详情
化简下面各比,并求出比值.
5
16
1
4
;              4.2:0.8.

5
16
1
4
;              4.2:0.8.
5
16
551616
1
4
;              4.2:0.8.
1
4
1144
▼优质解答
答案和解析
(1)
5
16
1
4

=(
5
16
×16):(
1
4
×16)
=5:4;

5
16
1
4

=5:4
=5÷4
=
5
4


(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
5
16
555161616:
1
4

=(
5
16
×16):(
1
4
×16)
=5:4;

5
16
1
4

=5:4
=5÷4
=
5
4


(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
1
4
111444
=(
5
16
×16):(
1
4
×16)
=5:4;

5
16
1
4

=5:4
=5÷4
=
5
4


(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
5
16
555161616×16):(
1
4
×16)
=5:4;

5
16
1
4

=5:4
=5÷4
=
5
4


(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
1
4
111444×16)
=5:4;

5
16
1
4

=5:4
=5÷4
=
5
4


(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
5
16
555161616:
1
4

=5:4
=5÷4
=
5
4


(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
1
4
111444
=5:4
=5÷4
=
5
4


(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
5
4
555444;

(2)4.2:0.8
=(4.2×5):(0.8×5)
=21:4;

4.2:0.8
=21:4
=21÷4
=
21
4
21
4
212121444.
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