8th Grade Module 1/4 Review

Laws of Exponents

100

Simplify 8⁵ x 8⁸

8¹³

200

Simplify 21⁴⁵ / 21²¹

21²⁴

300

Simplify (4⁴)³

4¹²

400

Simplify 12^-6

1 / 12⁶

Scientific Notation

100

What are the requirements for a number to be a leading digit (a)? 

1 <= a < 10

200

Write 32000 in scientific notation.

3.2 x 10⁴

300

Is 12.3 x 10⁴ in scientific notation? Why or why not?

No, because 12.3 is greater than 10.

400

Write 16 000 000 000 000 in scientific notation.

1.6 x 10¹³

Solve!

100

Solve for x! 

x + 4 = 13

x = 9

200

Solve for x!

2x - 5 = 23

x = 14

300

Solve for x! 

4 ( 3x + 2 ) = 104

x = 8

400

Solve for x! 

2 ( 4x + 6 ) = 6x + x + 36

x = 24

Math Statements

100

Write as an expression.

The product of 5 and a number. 

5x

200

Write as an equation!

The sum of a number and two times the number is 24.

x + 2x = 24

300

Write as an equation. 

The sum of thirteen and twice a number is 29.

13 + 2x = 29

400

The sum of four consecutive numbers is 24

x + (x+1) + (x+2) + (x+3) = 24

or 4x + 6 = 24

Plot

100

What is the variable we use for slope? 

m 

200

The formula for slope is m = ______

m = rise / run