MTH 100 Exam #1

Fractions

100

1/5 + 7/30 

13/30

200

6/7 - 9/10

- 3/70

300

6/75 + 6/5

96/75

400

12/13 - 3/26

21/26

500

109/400 - 580/1200

-253/1200

PEMDAS

100

3(6+7)+5-12

32

200

4²(8 x 5) - 1

639

300

[9-{15 / 5}³]x2+2

-34

400

[(-10)-{(-3)²-(-10)}] x ((-3)-(-3))

0

500

(-4) - (-10) x [3-{3³+10}]

-344

Linear Equations

100

6y-9=13

y=22/6

or

y=11/13

200

65b+30/7=160

b=218/91

300

Solve for y:

b+3y=40

y=(40-b)/3

or

y=40/3 + -1/3b

400

Solve for T:

(T+W)/Z=B

T=BZ-W

500

Solve for Y

((2W+T)/Y) +Z=B

Y= (2W/B-Z) +T

Types of Numbers

100

Numbers that are only positive. Not including 0

1,2,3... infinity

Natural Numbers

200

Numbers that are only positive. Including 0.

0,1,2,3... infinity

Whole Numbers

300

Numbers that are fractions. 

-1/2, 3/4, -10345/87654

Rational Numbers

400

Numbers that can be divided by itself and 1.

2,3,5,7,11,23,19...

Prime Numbers

500

All Natural, Whole, Integers, Rational/Irrational numbers combined.

Real Numbers

Mixed

100

What does PEMDAS stand for?

P: ()

E: x²

M: X

D: /

A: +

S: -

 

200

True or False:

When adding/subtracting fractions, I add/subtract BOTH the numerator and denominator after I find common denominators.

FALSE

When adding/subtracting fractions I only add/subtract the NUMERATORS after I find common denominators.

300

Whole numbers that range from negative infinity to positive infinity.

Integers

400

What is the difference between an irrational number and a rational number?

Rational numbers are fractions. 

Irrational numbers are decimals that don't repeat.

500

True or False:

I am allowed to divide fractions

FALSE

You can only multiply fractions. When you divide fractions you keep, change, and flip. 

Keep the first fraction, change the division to multiplication, and flip the second fraction