Adding and Verifying Fractions

The video tutorial explains how to add fractions by finding a common denominator. It begins with an introduction to the concept of adding fractions and the necessity of having the same denominator. The tutorial then demonstrates how to find the lowest common denominator by listing multiples and adjusting numerators accordingly. Once the fractions have a common denominator, they are added together. The video also includes a method to verify the solution by cross-multiplying. The tutorial concludes with a summary and thanks to the viewers.

Why is it necessary to have a common denominator when adding fractions?

• To change the fractions to decimals

• To ensure the fractions are comparable

• To simplify the fractions

• To make the numerators equal

What is the lowest common multiple of 4 and 3?

• 12

• 9

• 6

• 15

Tags

CCSS.5.NF.B.5B

When adjusting the numerators, what should you multiply the numerator of 1/4 by?

• 3

• 5

• 2

• 4

What is the new numerator of 2/3 when adjusted to the common denominator?

• 10

• 8

• 6

• 4

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the sum of the fractions 1/4 and 2/3 when they have a common denominator?

• 9/12

• 12/12

• 10/12

• 11/12

Tags

CCSS.7.NS.A.1C

What is the first step in verifying the result of adding fractions?

• Subtract the fractions

• Cross-multiply the numerators

• Multiply the denominators

• Divide the numerators

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the result of multiplying the numerator of 1/4 by the denominator of 2/3?

• 3

• 4

• 6

• 2

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

What is the result of multiplying the denominator of 1/4 by the numerator of 2/3?

• 6

• 8

• 10

• 12

Tags

CCSS.7.NS.A.1C

What is the final step in verifying the addition of fractions?

• Add the cross-multiplied results

• Compare the cross-multiplied results

• Divide the cross-multiplied results

• Subtract the cross-multiplied results

Tags

CCSS.7.NS.A.1C