Question

fill in the blanks. then, choose the property of addition you used.
(a) \\( 9 + 7 = 7 + 9 \\) select
(b) \\( 5 + (2 + 7) = (5 + 2) + 7 \\) select
options: associative property, commutative property, identity property
(c) \\( 0 + 4 = 4 \\)

Explanation:

(a) The order of addends is swapped, which matches the definition of the Commutative Property of Addition.
(b) The grouping of addends is changed without altering the sum, which is the Associative Property of Addition.
(c) Adding 0 to a number leaves the number unchanged, which is the Identity Property of Addition.

Answer:

(a) Commutative Property
(b) Associative Property
(c) Identity Property