x:10=6:5 = 0.4:3.2=x:9.6
0.33=
-0.375=
÷60%=
10.9+1.09=
12×÷12×=
632÷69≈
14.14÷14=
1÷7+=
36÷=
= ×
=
= ×22+3
=10+3
=13