Adding and Subtracting Fractions Explained

This video tutorial explains how to add and subtract fractions by focusing on two key points: finding a common denominator and adding or subtracting the numerators. It provides detailed examples of both addition and subtraction of fractions, including handling improper fractions and mixed numbers. The video concludes with additional examples for practice and invites viewers to provide feedback.

What is the first key point to remember when adding or subtracting fractions?

• The numerators must be the same

• The fractions must be mixed numbers

• The denominators must be the same

• The fractions must be improper

Tags

CCSS.7.NS.A.1C

What is the second key point to remember when adding or subtracting fractions?

• Multiply the fractions

• Only add or subtract the denominators

• Convert fractions to decimals first

• Only add or subtract the numerators

Tags

CCSS.7.NS.A.1C

What is the lowest common multiple (LCM) of 4 and 3?

• 6

• 9

• 15

• 12

If you have the fractions 3/4 and 1/3, what is the common denominator you should use?

• 9

• 6

• 12

• 15

What is the result of adding 9/12 and 4/12?

• 13/12

• 1/12

• 12/12

• 15/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the lowest common multiple (LCM) of 3 and 5?

• 15

• 10

• 25

• 20

What is the result of subtracting 6/15 from 25/15?

• 15/15

• 13/15

• 19/15

• 17/15

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do you convert a mixed number to an improper fraction?

• Multiply the whole number by the denominator and add the numerator

• Multiply the numerator by the denominator

• Add the whole number to the numerator

• Subtract the numerator from the denominator

What is the improper fraction form of 2 and 3/4?

• 8/4

• 7/4

• 11/4

• 9/4

What is the simplified form of 38/12?

• 19/6

• 17/6

• 13/6

• 15/6