Subtracting Fractions with the Same Denominator

This video tutorial teaches how to solve word problems involving the subtraction of fractions with the same denominator by breaking them into unit fractions. It begins with a problem about Marissa and Marcus, explaining the concept of unit fractions and common mistakes in subtracting fractions. The tutorial provides a step-by-step solution to the problem and includes an additional example with brownies. The lesson concludes with a summary of the key points.

What is a common mistake students make when subtracting fractions?

• Adding the numerators only

• Subtracting both numerators and denominators

• Dividing the fractions

• Multiplying the fractions

In the problem involving Marissa and Marcus, what is the result of 7/12 minus 5/12?

• 2/12

• 1/12

• 4/12

• 3/12

How many pieces of 1/12 size are left after subtracting 5/12 from 7/12?

• 3 pieces

• 2 pieces

• 4 pieces

• 1 piece

In the brownie problem, how much of the pan is left after Maksim's friends eat 3/8?

• 2/8

• 3/8

• 5/8

• 6/8

What fraction of the pan of brownies did Maksim's friends eat?

• 5/8

• 2/8

• 6/8

• 3/8