Add and Sub Review

Which number makes the number sentence true?

12 + 7 = ____ + 12

• 19

• 9

• 7

• 29

Which number makes the number sentence true?

(4 + ___) + 7 = 4 + (5 + 7)

• 4

• 5

• 7

• 16

Which number makes the number sentence true?

8 + _____ = 8

• 1

• 8

• 10

• 0

Which property does this equation represent?

3 + 0 = 3

• Commutative

• Associative

• Identity

Which property does the following equation represent?

4 + 6 = 6 + 4

• Commutative

• Associative

• Identity

Which property does the following equation represent?

4 + (8 + 2) = (4 + 8) + 2

• Commutative

• Associative

• Identity

Which number sentence could you use to check the subtraction problem below?

58 - 39 = ?

• ? + 39 = 58

• ? - 39 = 58

• 58 + 39 = ?

• 58 + ? = 39

What does the word "sum" mean?

• the total when you subtract

• the total when you add

• the total when you multiply

• the total when you divide

What does the word "difference" mean?

• the total when you subtract

• the total when you add

• the total when you multiply

• the total when you divide

Would you ADD or SUBTRACT to solve this problem?

Emily and Evan are both selling popcorn. Evan has sold 536 packs of popcorn and Emily has sold 814. How many more packs of popcorn has Emily sold than Evan?

• add

• subtract