Fractions: Adding, Subtracting, Multiplying, Dividing

What must you do when adding or subtracting fractions

• Keep the first number, flip the second number, and change the sign

• Add or subtract straight across

• Change mixed numbers to improper fractions

• Find a common denominator

What must you do when multiplying a proper fraction by a proper fraction?

• Find a common denominator and make equivalent fractions.

• Multiply the numerator by numerator and multiply the denominator by denominator

• Cross multiply

What is the sum of these fractions in lowest terms?

• 4/5

• 3/20

• 17/20

• 4/20

What is the sum of these fractions in lowest terms?

• 22/5

• 6/3

• 22/15

• 6/15

What is the sum of these fractions in lowest terms?

What is the sum of these fractions in lowest terms?

• 22/5

• 6/3

• 22/15

• 6/15

Fill in the blank to the essential question (from adding and subtracting fractions notes): "How can I use _______________ fractions to add and subtract fractions?"

• similar

• common

• like

• equivalent

Solve and write your answer in simplest form.

2 ⅜ + 1 ¾

• 4 (1/8)

• 4 (5/8)

• 4 1/4

• 3 (6/8)

What operations do you have to get a common denominator to solve? (Choose all that apply.)

• Adding

• Subtracting

• Multiplying

• Dividing

If you were to add \frac{1}{6}+\frac{2}{3}  
What is the least common denominator you would use to solve it?

• 3

• 6

• 9

• 12