Adding Fractions with Unlike Denominators (Guided Lesson)

Adding Fractions with Unlike Denominators

Multiple Choice

What is the first step in adding fractions with different denominators?

• Find a common numerator

• Find a common denominator

• Subtract the fractions

• Multiply the fractions

Multiple Choice

Which of the following is a method to find a common denominator?

• List the multiples of each denominator

• Multiply the numerators

• Add the numerators

• Subtract the denominators

Multiple Choice

What is the least common multiple of 10 , 15 , and 30

• 15

• 10

• 30

• 60

Multiple Choice

What is the result of adding 18/30, 10/30, and 12/30?

• 30/30

• 60/30

• 50/30

• 40/30

Math Response

How do you rewrite $$\frac{40}{30}$$ as a mixed number ?(don't simplify yet)

Type answer here

Correct Answer: 1\frac{10}{30}

Deg^°

Rad

Math Response

Simplify.

$$1\frac{10}{30}$$

Type answer here

Correct Answer: 1\frac{1}{3}

Deg^°

Rad

Math Response

What is the lowest common denominator of 5, 2, and 4?

Type answer here

Correct Answer: 20

Deg^°

Rad

Math Response

How do you rewrite $$\frac{36}{20}$$ as a mixed number ?(don't simplify yet)

Type answer here

Correct Answer: 1\frac{16}{20}

Deg^°

Rad

Math Response

Simplify.

$$1\frac{16}{20}$$

Type answer here

Correct Answer: 1\frac{4}{5}

Deg^°

Rad

Math Response

What is the sum?

You must have it written as a mixed number with a simplified fraction.

Type answer here

Correct Answer: 1\frac{9}{10}

Deg^°

Rad