Finding Common Denominators When Adding Fractions

This video tutorial explains how to add fractions with the same and different denominators, including mixed numbers. It covers finding common denominators, creating equivalent fractions, and adding numerators while keeping the denominator constant. The tutorial also provides tips for achieving high scores in math by ensuring complete and correct answers.

When adding fractions with the same denominator, what remains unchanged?

• The whole numbers

• Both numerators and denominators

• The denominators

• The numerators

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

• Multiply the fractions

• Subtract the smaller fraction from the larger one

• Add the numerators directly

• Find a common denominator

How do you find an equivalent fraction for 1/4 when the common denominator is 8?

• Add 4 to the numerator

• Divide the numerator by 2

• Multiply the numerator by 2

• Multiply the numerator by 4

What is the result of adding 3/8 and 1/4?

• 4/8

• 5/8

• 6/8

• 7/8

When adding mixed numbers, what should you do after finding equivalent fractions?

• Multiply the fractions

• Subtract the whole numbers

• Add the whole numbers

• Divide the fractions

What is the common denominator for adding 4 and 3/7 with 5 and 1/4?

• 35

• 14

• 21

• 28

Why is it important to use a math rubric when solving fraction problems?

• To achieve the highest score and ensure complete answers

• To ensure the work is neat

• To make the process faster

• To avoid using a calculator