Adding, Subtracting, & Multiplying Fractions and Mixed Numbers

When adding fractions with unlike denominators, what is the first thing you need to do?

• Find the LCD
• Find the GCF
• Add the Numerator
• Add the Denominator

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When adding mixed numbers, what is the first thing you need to do?

• Find the LCD
• Find the GCF
• Add the whole numbers
• Change them to improper fractions

When subtracting whole numbers and mixed numbers what is the first thing you need to do?

• Subtract the whole number
• Subtract the numerator
• Regroup, by changing the whole number to a mixed number
• Subtract the fractions

When multiplying fractions what do you do?

• Find the LCD
• Find the GCF
• Multiply the numerators then the denominators.
• Multiply the numerators, keep the same denominator

When multiplying mixed numbers, what is the first thing you need to do?

• Find the GCF
• Find the LCM
• Change the numbers to improper fractions.
• Simplify the fractions

When multiplying fractions and mixed numbers, what is the LAST thing you need to do?

• Find the common denominator
• Divide
• Subtract
• Simplify or change to mixed number if needed.

Tags

CCSS.5.NF.B.6

Solve 2 1/6 * 2/3 

• 1 4/9
• 26/18
• 15/9

solve Katoni bought 2 1/2 dozen donuts to bring to the office.  Since there are 12 donuts in a dozen, how many donuts did Katoni buy?

• 12 donuts
• 24 donuts
• no donuts
• 30 donuts

What is the simpliest form of 20/15.

• 4/3
• 1 1/3
• 20/15
• 5/3

solve 
Dominick lives 1 3/4 miles from his school.  If his mother drives him half way, how far will Dominick have to walk to get to school?

• 1 mile
• 8/8 mile
• 7/8 mile
• 1/2 mile

Tags

CCSS.7.NS.A.3