Finding the Least Common Denominator Efficiently

Maria, a mathematician, explains how to find the least common denominator using the division ladder method. She demonstrates the process with numbers 12 and 30, showing how to set up the division ladder, find common divisors, and multiply them to get the least common denominator, which is 60.

What is the name of the mathematician in the video?

• John

• Maria

• Alice

• Robert

What method does Maria use to find the least common denominator?

• Cross Multiplication

• Division Ladder

• Subtraction Method

• Prime Factorization

What is the first number Maria chooses to divide both 12 and 30?

• 5

• 2

• 3

• 4

What is the result of dividing 12 by 3 in the division ladder?

• 5

• 2

• 4

• 3

Tags

CCSS.3.OA.B.6

What number does Maria choose to divide both 4 and 10?

• 1

• 3

• 5

• 2

What is the result of dividing 10 by 2 in the division ladder?

• 2

• 4

• 3

• 5

Tags

CCSS.3.OA.B.6

What is the only number that can divide both 2 and 5?

• 1

• 2

• 3

• 5

What shape does Maria make with the numbers in the division ladder to find the least common denominator?

• X

• Y

• L

• T

What is the least common denominator of 12 and 30 according to Maria's method?

• 60

• 50

• 40

• 30

What is the final step Maria takes to find the least common denominator?

• Adding the numbers

• Dividing the numbers

• Subtracting the numbers

• Multiplying the numbers