adding zero
a+0= a
0+a= a
(hint: Name the principle.)
What is the principle of adding zero?
a+b=b+a
(hint: Name the principle.)
What is the commutative principle of addition?
In the equation 4 + (5+2)=
What you should add first.
What is (5+2)?
What are the numbers in parentheses?
( )
What are parentheses?
___+4=4
What is 0?
What is zero?
4+3= _____+4
What is 3?
4+ (3+2) = (4+3) + _______
What is 2?
a+0=0 a is called a__________________
What is a variable?
the same integer
What is any integer plus zero?
x+y=__ +x
What is y?
(a+b) + c
is the same as
a + (b+c)
(hint: Name the principle.)
What is the associative principle for adding integers?
any integer
What is a variable?