Mastering the Multiplication of Fractions

Mr. Richards teaches how to multiply fractions and mixed numbers using real-world examples. The lesson covers simplifying fractions, multiplying numerators and denominators, and applying these skills to solve word problems. The video emphasizes the importance of simplifying before multiplying and provides methods for handling mixed numbers.

If there are 12 students at a lunch table and two-thirds of them ordered a hamburger, how many students ordered a hamburger?

• 4

• 6

• 8

• 10

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

What fraction of the students at the lunch table ordered a cheeseburger?

• 2/3

• 1/2

• 1/3

• 1/4

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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

• 1/2

• 2/3

• 1/3

• 1/6

Tags

CCSS.5.NF.B.6

When multiplying fractions, what should you do if the numerator and denominator have common factors?

• Simplify before multiplying

• Ignore them

• Add the fractions

• Multiply first, then simplify

Tags

CCSS.5.NF.B.6

What is the product of 2/3 and -4?

• -8/3

• 2/3

• 8/3

• -2/3

Tags

CCSS.7.NS.A.2A

How do you handle negative numbers when multiplying fractions?

• Ignore the negatives

• Convert them to positive numbers

• Attach the negatives to the denominators

• Attach the negatives to the numerators

Tags

CCSS.7.NS.A.2A

What is the first step in multiplying mixed numbers?

• Simplify the fractions

• Multiply the whole numbers

• Convert mixed numbers to improper fractions

• Add the fractions

Tags

CCSS.5.NF.B.6

What is the result of multiplying 5 1/3 by 3?

• 18

• 17

• 16

• 15

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

How many days does the average human sleep in a year, given that humans sleep about one-third of each day?

• 120 days

• 121 days

• 122 days

• 123 days

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

What is the improper fraction representation of 365 1/4?

• 1460/4

• 1461/4

• 1463/4

• 1462/4