Умножение и деление на 2
2х1= 2х2= 2х3= 2х4= 2х5= 2х6= 2х7= 2х8= 2х9=
2:1= 4:2= 6:2= 8:2= 10:2= 12:2= 14:2= 16:2= 18:2= 2:2= 6:3= 8:4= 10:5= 12:6= 14:7= 16:8= 18:9=