Subtracting Mixed Numbers with Unlike Denominators Using Area Models

This video tutorial teaches how to subtract mixed numbers with unlike denominators using area models. It covers the basics of fractions, the importance of common units, and the difference between mixed numbers and improper fractions. The tutorial demonstrates creating area models and finding common denominators, leading to a step-by-step subtraction process.

What does the numerator in a fraction represent?

• The total number of parts in the whole

• The number of parts being considered

• The size of each part

• The number of wholes

Why is it important to have a common unit when adding or subtracting fractions?

• To make the fractions larger

• To ensure the fractions are equal

• To simplify the fractions

• To accurately perform the operation

What is the common denominator for the fractions 1/4 and 3/5?

• 20

• 5

• 9

• 4

How do you create an area model for a mixed number?

• By adding the numerators and denominators

• By subtracting the smaller fraction from the larger one

• By multiplying the whole number by the fraction

• By drawing whole units and dividing them into equal parts

What is the equivalent of 2 1/4 when using a common denominator of 20?

• 2 and 5/20

• 2 and 10/20

• 2 and 15/20

• 2 and 20/20

What is the first step in solving the equation 2 1/4 - 1 3/5?

• Subtract the numerators

• Subtract the whole numbers

• Find a common denominator

• Add the fractions

After regrouping, what is the result of 25/20 - 12/20?

• 15/20

• 10/20

• 13/20

• 20/20