Module 8 Lesson 4

Module 8 Lesson 4

By Mr. Wellner

​Students will be able to:

interpret and evaluate algebraic expressions using the order of operations.

6th | Mathematics

Remember! Algebraic expressions have variables!

Perimeter:

A linear measurement around the border of something.​

​

​Vocabulary

Spark your learning.

​You can evaluate an expression with a variable by substituting a known value for the variable.

​How should we find the AREA of this rug?

-Well we know that the formula for Area is A=bh​ or Area = Base x Height

1. A= (w) × (6)

2. We can write it as A=6w

3. So for whatever w is we can plug it into the formula.

Spark your learning.

A=6w

Find the Area when w = 4

1. A = 6w

2. A = 6(4)

3. A = 24 ft²

Poll

Evaluate 18y when y = $$\frac{2}{3}$$  

• 8

• 10

• 12

• 14

Explanation

Poll

Evaluate x - 12 when x = 18.6

• 28.6

• 12.4

• 6.6

• 14

x-12 when x = 18.6

x - 12

(18.6) - 12

=6.6​

Explanation

Multiple Choice

The perimeter of a rectangular swimming pool can be written as 2l + 2w, where l is the length and w is the width. Find the perimeter when l = 7.5 meters and w = 4.5 meters.

• 12

• 16

• 20

• 24

Multiple Choice

Evaluate 4x³ - 3y when x = 2 and y = 10.

• 18

• 42

• 2

• 348

Fill in the Blanks

Evaluate 6s + $\frac{d}{2}$  when s = $\frac{5}{12}$   d = 15.

Fill in the Blanks

The expression 1.8C + 32 gives the temperature in degrees Fahrenheit (° F) for a given temperature C in degrees Celsius (° C). Find the temperature in degrees Fahrenheit that is equivalent to 30 ° C.