Pre-Algebra Test 10 Review

Solving Equations

100

1.2+y=4

y=2.8

200

7/8=1/2x

x=7/4

300

8x-0.2=9.8

x=1.25 or x=5/4

400

2/3n+1/2=3/4

n=3/8

500

x/4-1.2=2

x=12.8

Combining Like Terms

100

2-(-8c)+24-7c

c+26

200

3x+2(5x-7)

13x-14

300

-4x-6y+20x-3y

16x-9y

400

5(2x-4)+2(x+9)

12x-2

500

6(-5u+1)-3(4u-12)

-42u+42

Finding Slope

100

What is the slope of y=5x?

x=5

200

What is the slope 

t=9/7d?

m=9/7

300

Find a slope of the line that goes through (-2, 1) and (3,3)

m=2/5

400

What is the slope of the line that goes through (8, 3) and (2, 5)?

m=-1/3

500

What is the slope of the line that goes through (-2, 3) and (1, 3)?

m=0

Calculating Scientific Notation

100

Write 0.00000234 in scientific notation

2.34*10^-6

200

(2xx10^3)(3xx10^2)

6xx10^5

300

(9.9xx10^8)/(3xx10^5)

3.3xx10^3

400

(6xx10^4)(6xx10^4)

3.6xx10^9

500

(3xx10^8)/(4xx10^5)

7.5xx10^2

Laws of Exponents

100

x^6*x^2

x^8

200

x^5/x^3

x^2

300

(x^4)^3

x^12

400

(xy^4z^2)/(y^4z)

xz

500

((a^3)^2*b^2c^5)/(a^3bc^4)

a^3bc