Adding and Subtracting Fractions Made Easy

Mr. Buffington's lesson covers adding and subtracting fractions with different denominators. It begins with a visual explanation of fraction addition, followed by steps to find common denominators. The lesson includes examples of adding and subtracting fractions and mixed numbers, emphasizing the importance of common denominators. The session concludes with a recap of the key concepts.

What is the result of adding 1/4 and 2/4?

• 3/4

• 2/4

• 3/8

• 1/2

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do you add fractions with different denominators?

• Subtract denominators

• Multiply denominators

• Find a common denominator

• Add numerators directly

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the first step in finding a common denominator?

• Multiply both denominators

• Add both denominators

• Find the least common multiple of the denominators

• Subtract one denominator from the other

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

After finding a common denominator, what is the next step?

• Add the denominators

• Subtract the numerators

• Convert both fractions to have the common denominator

• Divide the numerators

Tags

CCSS.7.NS.A.1C

What is the result of adding 2/5 and 3/7 after finding a common denominator?

• 25/35

• 5/14

• 29/35

• 5/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common denominator (LCD) for 9 and 12?

• 36

• 108

• 24

• 21

After converting fractions to have the same denominator, what do you do next in subtraction?

• Subtract the denominators

• Multiply the numerators

• Add the numerators

• Subtract the numerators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do you handle mixed numbers with different denominators?

• Convert to improper fractions first

• Add whole numbers and fractions separately

• Multiply whole numbers and fractions

• Subtract whole numbers and fractions

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the result of 2 and 3/7 plus 4 and 1/5?

• 6 and 22/35

• 6 and 15/35

• 7 and 4/35

• 6 and 8/35

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the key to adding or subtracting fractions with different denominators?

• Finding the highest common factor

• Multiplying both denominators

• Adding both denominators

• Finding the least common multiple

Tags

CCSS.7.NS.A.1C