o8:24=x:67x0.0o=40.28:12=20:xx:2.o=4:0.o2.64=x4.80.1:0.o=0.4x.-六年级数学

题文

o
8
2
4
=x:
6
7
x
0.0o
=
4
0.2
8:12=20:x
x:2.o=4:0.o
2.6
4
=
x
4.8
0.1:0.o=
0.4
x
题型:解答题  难度:中档

答案

(a)
5
8
8
4
=x:
6
7

&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;
8
4
x=
5
8
×
6
7

&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;
8
4
4
8
=
a5
28
×
4
8

&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多; &nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多; x=
5
7


(2)
x
0.05
=
4
0.2

&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多; 0.2x=0.05×4,
&nbs多; 0.2x÷0.2=0.2÷0.2,
&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多;&nbs多; x=a;
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