Question

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

Explanation:

Step1: Solve (a) using identity property

The identity property of addition states that $0 + a = a$. So to get $0 + \square = 7$, the blank is $7$.

Step2: Solve (b) using commutative property

The commutative property of addition states that $a + b = b + a$. For $5 + 9 = 9 + \square$, the blank is $5$.

Step3: Solve (c) using associative property

The associative property of addition states that $(a + b) + c = a + (b + c)$. For $(2 + 5) + 4 = \square + (5 + 4)$, the blank is $2$.

Answer:

(a) Blank: $7$; Property: Identity Property of Addition
(b) Blank: $5$; Property: Commutative Property of Addition
(c) Blank: $2$; Property: Associative Property of Addition