第84页

信息发布者:
1219
0.65
0.8
250
$\frac{17}{3}$
0.015625
1
30
$\frac{1}{5}$
0.2
=368÷100
=3.68
​$=\frac {5}{8}×(\frac {7}{4}+\frac {1}{4})$​
​$=\frac {5}{8}×2$​
​$=\frac {5}{4}$​
​$=5+\frac {16}{27}+\frac {11}{27}$​
​$=5+1$​
​$=6$​
=(772+128)-(317+283)
=900-600
=300
解:​$\frac {2}{3}x=\frac {2}{9}×21$​
​$x=7$​
解:​$0.74x=33.3$​
​$x=45$​
解:​$\frac {1}{5}x=10$​
​$x=50$​
解:​$\frac {4}{5}x=\frac {8}{25}$​
​$x=\frac {2}{5}$​
20099000
8
千万
2010万
$\frac{9}{4}$
$\frac{1}{4}$
16
5
10
100
12
8
$1:3=5:15$
7.2
2.4
7