2.9 Parts of Speech: Using Operations Correctly

2.9 Parts of Speech: Using Operations Correctly

GOAL: To be able to identify operations, and use them, appropriately!

Multiple Choice

State the operation; think about what is happening with the two objects.

• Addition

• Multiplication

• Subtraction

• Division

​Hidden Operators

• ​Sometimes an operator within an expression is not written explicitly.

• ​For example; 8x²

  • ​The hidden operator is ....

  • ​Why?

Multiple Choice

What's the hidden operator given;

3(5 + h)

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

What operation is being performed?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

What is the object?

• 10

• -10

• Both of these

• Neither of these

Multiple Choice

What is the object?

• 8

• -8

• Both of these

• Neither of these

Multiple Choice

What is the object?

• 8

• -8

• Both of these

• Neither of these

​WHAT'S THE DIFFERENCE

​(-8)² has a parenthesis while -8² does NOT!

​

​Remember, order of operations tells us the we need to square the -8 in the first one while the second has a hidden operation, what is it?

Multiple Choice

What is/are the object(s)?

• 2, (x + y)

• 2, x, y

• x, y

• 2

Multiple Choice

True or False...

$$\frac{2}{a+b}=\frac{2}{a}+\frac{2}{b}$$  

• TRUE

• FALSE

Multiple Choice

True or False...

$$\frac{a+b}{2}=\frac{a}{2}+\frac{b}{2}$$  

• TRUE

• FALSE

Multiple Choice

Which of the following is equivalent to

$$\frac{4x+3}{4}$$  ?

• x + 3

• x + 4

• $$\frac{x}{4}+3$$  

• $$x+\frac{3}{4}$$  

Fill in the Blank

Evaluate the expression for n = 5;

$$\frac{2\left(n^2-1\right)}{3}$$