Properties of Operations

Properties of Operations

Multiple Choice

Name the property shown by the statement

 $42+x+y=42+y+x$  

• Commutative Property

• Associative Property

• Additive Identity

• Multiplicative Identity

Multiple Choice

Name the property shown by the statement

 $3x+0=3x$  

• Commutative Property

• Associative Property

• Additive Identity

• Multiplicative Identity

Open Ended

State whether the following conjecture is true or false. If false provide a counterexample.

The difference of 2 different whole numbers is always less than both of the two numbers

Multiple Choice

Lance made four phone calls from his cell phone today. The calls lasted 4.7, 9.4, 2.3, and 10.6 minutes. Use mental math to find the total amount of time he spent on the phone.

• 27 minutes

• 42 minutes

• 17 minutes

• 35 minutes

Open Ended

Simplify each expression. Justify each step.

 $4\cdot\left(3c\cdot2\right)$