Lesson 6-2 Numerical Expressions

Lesson 6-2 Numerical Expressions

By Amanda Maynard

Order of Operations

How do we use the order of operations to solve a numerical expression?

Multiple Choice

What is the first step in solving this expression?

$$10+2\times15$$  

• $$10+2$$  

• $$2\times15$$  

Fill in the Blanks

Solve the numerical expression.

$10+2\times15$  

Multiple Choice

What is the first step in solving this equation?

$$16\div2\times4$$  

• $$16\div2$$  

• $$2\times4$$  

Fill in the Blanks

Solve the numerical expression.

$16\div2\times4$  

Parentheses and Exponents

How do we use the order of operations to solve a numerical expression with parentheses and exponents?

Multiple Choice

What is the first step in solving this equation?

$$25\times\left(5-2\right)\div5-12$$  

• $$25\times5$$  

• $$5-2$$   

• $$2\div5$$  

• $$5-12$$  

Fill in the Blanks

Solve the numerical expression.

$25\times\left(5-2\right)\div5-12$  

Multiple Choice

What is the first step in solving this equation?

$$24\div\left(2^3+4\right)$$  

• $$24\div2$$  

•    $$2^3+4$$  

•   $$2^3$$  

Fill in the Blanks

Solve the numerical expression.

$24\div\left(2^3+4\right)$  

Fill in the Blanks

Solve the numerical expression.

$30-10+9$  

Fill in the Blanks

Solve the numerical expression.

$4+10\times3$  

Fill in the Blanks

Solve the numerical expression.

$4^3+5\times2-1$  

Fill in the Blanks

Solve the numerical expression.

$3\times\left(2^3+5\right)-7$  

Poll

Alexis and three friends are at the mall. Each person buys a pretzel for $4, sauce for $1, and a drink for $2. Write an expression for the total cost.

• $$4\times\left(4+1+2\right)$$  

• $$3\times\left(4+1+2\right)$$  

• $$4\times4+1+2$$  

• $$3\times4+1+2$$  

Poll

$$4\times\left(4+1+2\right)$$  

Find the total cost.

• 28

• 21

• 19

• 15

Multiple Choice

Alan and his two friends need to buy soccer equipment. Each person buys a ball for $15, a pair of shin guards for $18, and a pair of cleats for $25.

Write an expression for the total cost of equipment they buy altogether.

• $$3\times15+18+25$$  

• $$2\times\left(15+18+25\right)$$  

• $$3\times\left(15+18+25\right)$$  

• $$2\times15+18+25$$  

Multiple Choice

Solve the numerical expression.

$$3\times\left(15+18+25\right)$$  

• 174

• 116 

• 88

• 73 

Independent Practice

WB p.444 #1-4