Adding Fractions with Unlike Denominators Using Fraction Bars

This video tutorial teaches how to add fractions with unlike denominators using fraction bars. It covers the concept of common denominators, equivalent fractions, and addresses common misunderstandings. The tutorial provides step-by-step examples, including how to handle cases where denominators are divisors or multiples of each other, and concludes with a problem-solving example.

What is a common denominator?

• A number that is a multiple of both denominators

• A number that is a multiple of both numerators

• A number that is a divisor of both denominators

• A number that is a divisor of both numerators

When adding 1/2 and 1/8, why is only one fraction changed?

• Because 2 is a multiple of 8

• Because 2 is a divisor of 8

• Because 8 is a divisor of 2

• Because both denominators are even

What mistake do students often make when adding fractions like 1/2 and 1/3?

• They multiply the numerators and denominators

• They subtract the numerators and add the denominators

• They add the numerators and denominators directly

• They divide the numerators and multiply the denominators

How do you find an equivalent fraction for 1/2 when adding it to 1/3?

• Multiply 1/2 by 2/2

• Multiply 1/2 by 3/3

• Multiply 1/2 by 1/1

• Multiply 1/2 by 4/4

What is the equivalent fraction of 1/3 when adding it to 1/2?

• 2/6

• 3/6

• 4/6

• 1/6

In the example of 1/3 + 2/4, what is the common denominator used?

• 6

• 8

• 10

• 12

Who was correct in the example problem, Sammy or Trevan?

• Neither was correct

• Trevan was correct

• Sammy was correct

• Both were correct