×0=
× =
×12=
45× =
9× =
×100=
18× =
17×
( + )×32
× + ×
× ×16
+ ×
44﹣72×
[ ×( ﹣ )]÷
÷( + )
×16﹣ ×14+ ×70
( + )× .
×4
9× ×9
×
÷
÷6
÷ 2.
3÷ =
÷10=
÷ =
﹣ =
÷(1﹣ × )
×[ ÷( + )]
( ﹣ × )÷
+ × ×
9× + ÷
( + )×8+ .
x﹣ x=
1﹣ x=
8x+ =
÷x=
x÷ =
3÷ x=
x÷3=
8x× = .