Equivalent Expressions Review

Additive Inverse

100

What is the additive inverse of 9.3?

-9.3

200

Rewrite this expression using only addition:

-6b+8b-27-3b+8

-6b+8b+(-27)+(-3b)+8

300

Rewrite this expression using only addition:

7a-4-8a-6

7a+(-4)+(-8a)+(-6)

400

Rewrite this expression using only subtraction:

1+4b+1-10b

1-(-4b)-(-1)-10b

500

Rewrite this expression using only subtraction:

-7+(-4b)+1+6b+(-3b)

-7-4b-(-1)-(-6b)-3b

Expanding

100

9(1+6m)

9+54m

200

-6(-10+5x)

60-30x

300

9(k-6)

9k-54

400

-5(b+9)

-5b-45

500

-5.7(1.8-4.2x)

-10.26+23.94x

Factoring

100

2x+10

2(x+5)

200

-4v+20

-4(v-5)

or

4(-v+5)

300

8x-40

8(x-5)

or

-8(-x+5)

400

-35+49n

-7(5-7n), 7(-5+7n)

500

-91m-42

-13(7m+4)

or

13(-7m-4)

Combining Like Terms

100

-2b+10b

8b

200

3x+2+3-5x

-2x+5

300

a+8.3-6.2a

-5.2a+8.3

400

10-6(7x+10)

-50-42x

500

-7n-6.09(1-6.31n)

31.43n-6.09

Grab Bag

100

Write with fewer terms:

9k-7k+5

2k+5

200

Expand:

-2(9n-4)

-18n+8

300

Factor:

-20x+2

-2(10x-1)

or

2(-10x+1)

400

Factor:

-72v-18

9(-8v-2)

or

-9(8v+2)

500

Simplify:

8-2(5+2y)

-2-4y