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

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

• 2/3

• 1/2

• 1/3

• 1/4

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

• 1/2

• 2/3

• 1/3

• 1/6

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

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

• -8/3

• 2/3

• 8/3

• -2/3

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

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

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

• 18

• 17

• 16

• 15

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

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

• 1460/4

• 1461/4

• 1463/4

• 1462/4