math quiz 2

• 1 x 8 = 8

• 4 x 4 = 8

• 2 x 4 = 8

• 2 x 2 = 8

• 3 x 5 = 10

• 3 x 5 = 15

• 5 x 3 = 10

• 5 x 5 = 15

4 + 7 = 7 + 4

• commutative
• identity
• associative

8 + 0 = 8

• commutative
• identity
• associative

6 + 5 = 5 + 6

• commutative
• identity
• associative

8 + (2 +1) = (8 + 2) + 1

• commutative
• identity
• associative

(3 + 8) + 4 = 3 + (8 + 4)

• commutative
• identity
• associative

What number fills in the blank?
12 + 6 + ___ = 6 + 9 + 12

• 8
• 6
• 9
• 12

What number fills in the blank?
5 + ____ = 8 + 5

• 5
• 7
• 8

Round to the nearest hundred to estimate the sum.
125 + 652 = ______

• 700
• 800