Unit 3 Assessment

Front

How many variables are in the expression: q + 4r − 18 + 2^3 - 1?

Back

2 (The variables are q and r.)

Front

What is the expanded form of 7(u + 4)?

Back

7u + 28

Front

Evaluate (ac)^b when a=2, b=3, c=4.

Back

512

Front

What is an example of the Associative Property of Addition?

Back

(3 + 8) + 5 = 3 + (8 + 5) is an example.

Front

What property is used in the expression: 2(9 + 6) = 2(9) + 2(6)?

Back

Distributive Property.

Front

Define the Commutative Property of Addition.

Back

The Commutative Property of Addition states that changing the order of the addends does not change the sum. (e.g., a + b = b + a)

Front

What is the Associative Property of Multiplication?

Back

The Associative Property of Multiplication states that the way in which numbers are grouped in multiplication does not change the product. (e.g., (a × b) × c = a × (b × c))

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their given values.

Front

What is the Distributive Property?

Back

The Distributive Property states that a(b + c) = ab + ac.

Front

How do you simplify the expression 3(x + 2) + 4?

Back

3x + 6 + 4 = 3x + 10.