Midterm Review

Scientific Notation

100

6.375 X 10^-3

.006375

200

Express in Scientific Notation 

.00054

5.4 X 10^-4

300

Express in Scientific Notation

4,790,000,000

4.79 x 10⁹

400

Is this correct scientific notation? Justify your answer.

10.8 X 10⁴

No because the first number is greater than 10.

500

What is the product of 6.4 X 10⁸ and 3.2 X 10³ when written in scientific notation?

2.048 X 10¹²

Equations

100

x + 4 = -6

x = -10

200

Solve the equation for the given variable:

8y-16=32

x=6

300

4(3x+2)=56

x=4

400

A car travels 96 miles in two hours. How far does it go in 1 hour?

48 miles

500

3x + 6 - 12x - 9 = -39

x = 4

Expressions

100

-25-72

-97

200

17 + (-28)

-11

300

10ab - 4ab

6ab

400

8x + 3y - 5x + 2y

3x + 5y

500

If 4t³ and -5t⁴ are multiplied, the product is...

-20t⁷

Exponents

100

What is the value of 1/4 (2/3)⁰?

1/4

200

The value of 3^-2 is...

1/9

300

(-3x²)²

9x⁴

400

(-6)² + (-3)²

45

500

36x⁶y⁴ / 12x³y

3x³y³

Translating & Properties

100

Name the property.

3+2=2+3

Commutative

200

Translate into an algebraic expression:

Twice a number decreased by 4

2x-4

300

Determine which property is illustrated by the given statement:

-3(2x+1)= -6x-3

Distributive

400

Translate into an algebraic expression:

Two times a number increased by six times the same number

2x + 6x

500

a) Perform the indicated operation: 

            -4 (b-9)

b) State the property

a) -4b+36

b) Distributive