MULTIPLICATION BY ZERO If a is any whole number then `a xx 0 = 0 xx a = 0`.

EXISTENCE OF MULTIPLICATION IDENTITY If a is any whole number then a xx1=a=1xx a

If a is any whole number, then 0diva is _________.

DISTRIBUTIVITY OF MULTIPLICATION OVER ADDITION If abc are any three whole numbers then (i) a xx(b+c)=a xx b+a xx c( ii) (b+c)xx a=b xx a+c xx a

ASSOCIATIVITY If abc are any whole numbers then (a xx b)xx c=a xx(b xx c)

EXISTENCE OF ADDITIVE IDENTITY If a is any whole number then a+0=a=0+a

0.2 xx 0.3 = 0.6

0.4 xx 0.4 xx 0.4 = ?

Assertion : If a is a whole number, then a+0=0+a=a . Reason : If a and b are whole numbers, then a+b is also a whole number.

Property 3 If a any whole number other than zero then a-0=a but 0-a is not defined.