Properties of Operations with Expressions

Identify the property that the statement illustrates.

(3 x 8) x 2 = 3 x (8 x 2)

• associative property of multiplication

• commutative property of multiplication

• identity property of multiplication

• associative property of addition

Identify the property that the statement illustrates.

mn + 0 = mn

• identity property of addition

• commutative property of addition

• associative property of addition

• identity property of multiplication

Evaluate the expression when a = 9 and b = -4.

5ab

• -180

• 180

• 10

• 18

Evaluate the expression when a = 9 and b = -4.

11 + 4b + a

• 4

• 20

• -4

• -20

Use the distributive property to write an equivalent variable expression.

3(y + 9)

• 3y + 27

• 3y + 9

• y + 27

• 30y

Use the distributive property to write an equivalent variable expression.

(-2n - 3)(-8)

• 16n + 24

• 16n - 24

• -16n + 24

• -16n - 24

Find the area of the rectangle.

• 12x - 8 squared units

• 12x + 8 squared units

• 12x - 2 squared units

• 3x - 8 squared units

Find the area of the triangle.

• 45a + 63

• 90a + 126

• 45a + 7

• 90a + 7

Simplify the expression.

10x + 7 + 3x

• 13x + 7

• 20x

• 17x + 3x

• 10x + 10x

Simplify the expression.

-19 - 11a + a + 16

• -10a - 3

• -29a + 16

• 6a - 19

• -13a