Ch. 6 Review

Simplifying Expressions

100

2/8x - 8/5x 

-6/5x

200

9z - 4/3z

23/3z

300

7/9y + 2/3w - 5/9y - 4/3w

-2/3w + 2/9y

400

-6.8w - y + 0.69w + 8.24y - 2.9

-6.11w + 7.24y - 2.9

500

21/5x² - 3x² + 8x - 4/5x²

-3x³ + 17/5x² + 8x

Solving Equations

100

x - 5/9 = 8/9

x = 13/9

200

3/5b = 4

b = 20/3

300

m - 15.6 = 32.2

m = 47.8

400

3 1/3x  = 1 3/5

x = 12/25

500

0.39p = 1.092

p = 2.8

Word Problems

100

A recipe calls for 2 1/2 cups of sugar. Maddie has only 1 2/3 cups of sugar. How much more sugar does she need? 

5/6 cup

500

Ron is nailing three boards of the same thickness together. If the total thickness of the nailed boards is 4.5 in., what is the thickness of each board? 

1.5in.

Scientific Notation

100

Question 8

8.9 x 10¹⁹

200

Question 15

3.2076 x 10⁴

300

Question 20

6.1 x 10^-16

400

Question 25

5.008 x 10⁸

500

Question 26

2.134 x 10¹²