1.
Find the number that completes the number sentence. Then identify the property or rule.
12 − ∅ = 12
A.
43; Identity Property of Addition
B.
0; Associative Property of Addition
C.
0; Commutative Property of Addition
D.
0; Subtraction Rule
Hint
2.
Find the number that completes the number sentence. Then identify the property or rule.
24 + ∅ = 18 + 24
A.
18; Commutative Property of Addition
B.
18; Associative Property of Addition
C.
0; Identity Property of Addition
D.
6; Subtraction Rule
Hint
3.
Find the number that completes the number sentence. Then identify the property or rule.
43 + ∅ = 43
A.
12; Subtraction Rule
B.
0; Identity Property of Addition
C.
0; Commutative Property of Addition
D.
0; Associative Property of Addition
Hint
4.
Add mentally.
32 + 18 + 40
A.
70
B.
80
C.
100
D.
90
Hint
5.
Add mentally.
51 + 22 + 9
A.
81
B.
72
C.
82
D.
92
Hint