Adding and Subtracting Fractions

This video tutorial covers the basics of adding and subtracting fractions. It begins with an introduction to the concept of fractions and the importance of finding a common denominator. The tutorial provides step-by-step examples of adding and subtracting fractions, including finding the least common denominator and adjusting numerators accordingly. It also includes practical applications, such as evaluating expressions and solving real-world problems. The video concludes with a call to practice the skills learned and offers additional resources for further learning.

What is the first step in adding or subtracting fractions?

• Find a common denominator

• Find a common numerator

• Multiply the fractions

• Divide the fractions

What is the least common denominator (LCD) of fractions with denominators 7 and 3?

• 24

• 10

• 21

• 14

How do you adjust the numerator when finding a common denominator?

• Divide the numerator by the denominator

• Multiply the numerator by the same factor as the denominator

• Add the denominators

• Subtract the denominators

What is the result of adding 12/21 and 7/21?

• 21/21

• 19/21

• 12/21

• 7/21

What is the least common denominator for fractions with denominators 6 and 9?

• 12

• 18

• 24

• 15

What is the result of subtracting 5/6 from 2/9 using a common denominator?

• 7/18

• 5/18

• 9/18

• 11/18

When substituting a = 5/8 into an expression, what is the common denominator used?

• 40

• 16

• 24

• 32

What is the result of adding 25/40 and 12/40?

• 40/40

• 25/40

• 37/40

• 12/40

What is the least common denominator for fractions with denominators 12 and 8?

• 20

• 28

• 24

• 16

What is the result of subtracting 15/24 from 22/24?

• 5/24

• 15/24

• 22/24

• 7/24