Reagan's 1st nine weeks replacement grade

Irrational Numbers

100

Are some irrational numbers intergers?

No

200

Is √2 Irrational?

yes

300

Can a irrational number be a rational number?

no

400

Can a fraction be a irrational number?

No, beacuse rational numbers are fractions.

500

Is pie irrational?

yes, because it never repeats 

Exponents

100

how many exponent rules are there?

6

200

(x⁴)²

x⁸

300

4²

16

400

x+x+x

3x

500

3³(3²)=3⁵ simplified 

3³⁺²=3⁵

Scientific Notation

100

The body of a 150 lb person contains 2.3×10 ^-4 lb of copper. How much copper is contained in the bodies of 1200 such people?

= 2.76×10^-1

200

What is 230 expressed in scientific notation?

= 2.30×10²

300

What is 12 thousandth expressed in scientific notation?

1.2×10^-2

400

The speed of light is approximately 3×10^8 m/s. How far does light travel in 6.0×10^1 seconds?

1.8×10¹⁰

500

A computer can perform 4.66×10^8 calculations per second. How many calculations can this computer perform in one minute?

2.796×10¹⁰

Equations

100

-190=5(8n-6)

n= -4

200

-6(8v+8)=336

v= -8

300

4x+6=14

x=2

400

Jenny bought six fancy pens for a total of $30. How much did each pern cost?

6x/6 = 30/6 and x=5

500

James spent $40 on a magazine and some erasers. If the magazine cost $5 nad each eraser cost $5, then how many erasers did he buy?

5x+5=40  and x=7

Cube roots and Square roots

100

r³= -8

r= -2

200

x³=-125

x=-5

300

x³=1000

x=10

400

3√512

8

500

√64

+-8