问题 解答题
化简比
(1)168:84
(2)0.25:1.5(3)
1
5
6
7
(4)42:24
(5)3:0.5(6)27:54(7)1.2:0.12(8)
4
9
7
27
答案

(1)168:84,

=(168÷84):(84÷84),

=2:1;

(2)0.25:1.5,

=(0.25×100):(1.5×100),

=25:150,

=(25÷25):(150÷25),

=1:6;

(3)

1
5
6
7

=(

1
5
×35):(
6
7
×35),

=7:30;

(4)42:24,

=(42÷6):(24÷6),

=7:4;

(5)3:0.5,

=(3×10):(0.5×10),

=30:5,

=(30÷5):(5÷5),

=6:1;

(6)27:54,

=(27÷27):(54÷27),

=1:2;

(7)1.2:0.12,

=(1.2×100):(0.12×100),

=120:12,

=(120÷12):(12÷12),

=10:1;

(8)

4
9
7
27

=(

4
9
×27):(
7
27
×27),

=12:7.

单项选择题
问答题