Lesson 2-1 Addition Properties
- 1. What is the missing number? ______ + 2 = 7 + 2
A) 7
B) 4
C) 6
- 2. What is the missing number? (4 +5) +3 = 4 + (____ + 3)
A) 5
B) 3
C) 4
- 3. What is the answer to an addition problem called?
A) dividend
B) sum
C) numbers
- 4. Which answer shows The Identity Property ?
A) 0+4+5= 9
B) 0 + 6 = 6
C) 1+1 =2
- 5. What is the answer to this problem? 5+ (5+6)=
A) 17
B) 16
C) 13
- 6. Which property means "grouping"?
A) Identity
B) Commutative
C) Associative
- 7. Which property is the "zero" property?
A) Associative
B) Commutative
C) Identity
- 8. Which property is the "order" property?
A) Associative
B) Commutative
C) Identity
- 9. What is the correct way to group these numbers?
A) (5+5+5+5)=20
B) (5)+5+5+(5)=20
C) (5+5)+(5+5)=20
- 10. Explain why the answer to 2+6 is the same as the answer to 6+2.
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