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