The sum of an odd number and an even number is an even number. 

Commutativity and associativity are properties of addition of whole numbers. 

There is a whole number which when added to a whole number, gives that number. 

$12+(15+2)=(12+2)+15$ is an example of commutative property. 

There is a whole number, which, when added to itself gives that number, is _____ number. 

_____ is called additive identity for whole numbers. 

On the number line, $750$ lies on _____ side of $705.$

The least number to be subtracted from $25809$ to get a number exactly divisible by $139$ is _____. 

The property depicted by $(a+b)=(b+a)$ is _____ property.