Arithmetic
PEMDAS
Adding Fractions
Common Denominators
Vocabulary
100

9x9

81

100

(8+7)/3

5

100

(1/3)+(1/3)

2/3

100

What common denominator could we use for (1/2) + (1/3)

6, 12, 18, ect

100

What is the number beneath the fraction bar called?

Denominator

200

6+15+7

28

200

12+3+4-6

13

200

(1/5)+(3/5)

(4/5)

200

What is a common denominator between (1/4) + (1/5)

20, 40

200

What is the number above the fraction bar called?

Numerator

300

7x8

56

300

7+5x3

22

300

(1/5)+(2/10)

4/10 or 2/5

300

What is the least common denominator between (1/6) and (1/4)

12

300

A fraction where the numerator is greater than the denominator

Improper fraction

400

112-28

84
400

8/4+(2x3)

8

400

(1/3) + (1/4)

7/12

400

which is greater (2/5) or (3/7)

3/7 is greater than 2/5
400

Consisting of a whole number and a fraction

Mixed number

500

35/7

5

500

(5x5+8)/3

11

500

One ninth of the students in Mr. Beck’s class list red as their favorite color. Twice as many students call blue
their favorite, and three times (in regards to red) as many students prefer pink. The rest name green as their favorite color.
What fraction of the students say green or pink is their favorite color?

6/9 or 2/3

500

Leslie has 1 liter of milk in her fridge to drink today. She drank 1/2 liter of milk for breakfast and 2/5 liter of milk for dinner. How much of a liter did Leslie drink during breakfast and dinner?

9/10

500

Result of dividing two numbers

Quotient