2 Times Table

2 is an interesting number.
An Even number is defined as a number which when divided by 2 does not leave any remainder
or
any number or group of 1(s) is even if all the ones can be group as 2(s) without leaving any 1 dangling without a partner.
6 → 111111 → 11 11 11 → even
7 → 1111111 → 11 11 11 1 → not an even number otherwise known as odd ( dangling 1 - in red )
Any number when multiplied by 2 will produce an even number. The order of the multiplication is not important and does not have to be the last. And, so long as at least one multiplication-by-2 is carried out the result will be an even number. Since multiplication by 2 is actually adding the multiplier 2 times, any dangling 1 will be paired with another to produce a group of 2 .
In other words, multiplying by 2 adds out the 1 in an odd number.

Any number multiplied by 2 is just a case of adding the number to itself.

6 x 2 = 6 + 6 = 12 ( always group to 10(s) when possible - 6 + 4 + 2 = 10 + 2 = 12 )
9 x 2 = 9 + 9 = 18 ( 9 + 1 + 8 = 10 + 8 = 18 )
This is so because multiplication is just repeated addition.
In this instance the number is added 2 times to produce the result.
Before moving on ensure that your child knows the 2 Time-tables to perfection.
Just so you know, the 2-table has a wraparound (on the unit digit ) after 5.
6 x 2 → 1 x 2 = 2 and a 10 : 6 x 2 = 1 2
7 x 2 → 2 x 2 = 4 and a 10 : 7 x 2 = 1 4
6 wraps to 1
…
9 wraps to 4
This is an alternative way to remember the 2 -table- numbers after 5 :