Adding and Multiplying Fractions

The video tutorial explains how to add two fractions, one negative and one positive, by finding a common denominator. It involves multiplying the denominators to find a common base, rewriting the fractions, and then performing the addition. The process is broken down into clear steps, ensuring the denominators are the same before adding the numerators. The final result is simplified to provide the answer.

What is the first step in solving the problem of adding a negative and a positive fraction?

• Finding a common numerator

• Finding a common denominator

• Subtracting the fractions

• Multiplying the fractions

How do you find a common denominator for two fractions?

• Add the denominators

• Add the numerators

• Multiply the numerators

• Multiply the denominators

What is the common denominator of fractions with denominators 3 and 5?

• 5

• 15

• 8

• 10

What is the result of multiplying the denominators 3 and 5?

• 10

• 8

• 15

• 5

Why do we multiply the fraction by a form of one, such as 5/5?

• To keep the fraction's value the same while changing its form

• To simplify the fraction

• To change the value of the fraction

• To make the fraction larger

What is the purpose of rewriting the fractions with a common denominator?

• To make addition possible

• To simplify the fractions

• To change the fractions' values

• To make the fractions larger

What happens to the fraction -1/3 when multiplied by 5/5?

• -5/15

• -1/15

• -5/3

• -15/5

What is the result of multiplying 4/5 by 3/3?

• 4/15

• 15/15

• 12/15

• 3/15

What is the result of multiplying -1 by 5?

• -1

• 5

• -5

• 0

What is the result of multiplying 4 by 3?

• 12

• 9

• 15

• 7