0.4×25%=
0.27+0.73=
0.5÷0.01=
0.99÷0.11=
6-6÷7=
:1=x:
(4+x):2=21:7
①
②
③
x
36
1.8
y
24
9
15
60
18
1.2
0.4
0.5
1.5×80= ÷2= ×= ÷0.125=