Subtracting Mixed Numbers and Fractions

In this video, the teacher explains how to subtract mixed numbers using two examples. The process involves finding the least common denominator, converting fractions, and subtracting both whole numbers and fractions. The video concludes with a challenge problem for viewers to solve.

What is a mixed number?

• A number with only a fraction

• A number with only a whole number

• A number with a decimal

• A combination of a whole number and a fraction

What is the first step in subtracting mixed numbers?

• Convert fractions to decimals

• Find the least common denominator

• Subtract the whole numbers first

• Add the fractions

What is the least common denominator of 5 and 3?

• 25

• 20

• 15

• 10

After finding the least common denominator, what is the next step?

• Convert the fractions to improper fractions

• Add the fractions

• Multiply the numerators by the same factor as the denominators

• Subtract the whole numbers

What is the result of 7 and 4/5 minus 3 and 1/3?

• 4 and 2/3

• 4 and 3/5

• 4 and 7/15

• 4 and 1/5

In the second example, what is the least common denominator of 4 and 2?

• 8

• 6

• 4

• 2

What is the result of 3 and 3/4 minus 1 and 1/2?

• 2 and 1/4

• 2 and 1/3

• 2 and 1/2

• 2 and 3/4

What method is used in the second example to subtract mixed numbers?

• Vertical method

• Diagonal method

• Fraction method

• Horizontal method

What should you do if the denominators are already the same?

• Subtract the fractions directly

• Add the fractions

• Find a new common denominator

• Convert to improper fractions

What is the challenge problem given at the end of the video?

• Subtract 6 and 1/2 from 8 and 3/4

• Subtract 4 and 3/8 from 2 and 1/5

• Subtract 3 and 1/3 from 5 and 2/5

• Subtract 5 and 2/3 from 7 and 1/4