Modeling Subtraction of Fractions with Different Denominators Using Fraction Bars

This video tutorial teaches how to subtract fractions with different denominators using fraction bars. It begins with a review of subtracting fractions with common denominators, emphasizing the importance of using a common denominator to subtract numerators. The tutorial then demonstrates how to handle fractions with different denominators by converting them to equivalent fractions with a common denominator. Two examples are provided: subtracting 1/2 from 2/6 and subtracting 8/9 from 2/3, both using fraction bars to visualize the process. The lesson concludes with a recap of the key concepts learned.

What is the result of subtracting 2/4 from 1/4?

• 0

• 1/2

• 1/4

• 3/4

When subtracting fractions, what should you do if the denominators are already the same?

• Keep the largest denominator

• Add the numerators

• Subtract the numerators

• Subtract the denominators

What is a common mistake students make when subtracting fractions with different denominators?

• Multiplying the fractions

• Subtracting the numerators and denominators

• Adding the fractions

• Keeping the largest denominator

How can you make the fraction bars for 1/2 and 2/6 have the same number of pieces?

• Add dividers to make 1/2 into 3/6

• Add dividers to make 2/6 into 3/6

• Add dividers to make 2/6 into 1/2

• Add dividers to make 1/2 into 2/6

In the example of 8/9 minus 2/3, what is the common denominator used?

• 9

• 6

• 12

• 3