Lesson 15 Review

Vocabulary

100

Two or more terms that have the same variable.

Like Terms 

200

A letter that represents an Unknown Number 

Variable 

300

A number being multiplied by a variable 

Coefficient 

400

Multiplying each term in a sum by a common factor. 

Distributive property

500

A number, variable, or a product of a number, variable, and or expression. 

Term

Combine Like Terms

100

3x+5x-2

8x-2

200

5a- 3a +7a -r

9a -r

300

a+a+a+b+b+c+36a

39a +2b +c

400

5g+8g+7y -12g -7y

g

500

4wy- 3q +9wy -8wy +q+q+q

5wy

Distributive Property

100

4(5x+2)

20x+8

200

-3(2y-6)

-6y+18

300

10(-4r-2)

-40r+20

400

-1/3( 6m+ 9y)

-2m- 3y

500

15 (-8r +0)

-120r

Like Terms and Distributive Property

100

3(2m+4m)

18m

200

-4(3y+2y)

-20y

300

6-12(4x+3x)

6-84x

400

5+7y-2(9y+3)

-11y-1

500

5-7y-5(4y+20)

-27y-95

Fractions!

100

What is the top number called in a fraction?

Numerator 

200

What does the denominator of a fraction represent?

The whole amount. The number of slices that = a whole pizza 

300

Multiply the fractions

2/3 and 4/5

8/15

400

Divide the fractions 

5/4 and 3/2

Keep the first fraction and multiply by reciprocal 

5/4 x 2/3= 10/12= 5/6

500

When we add or subtract fractions what do we need to remember?

Common denominators.