Fraction Operations and Simplification

In this video, Mr. J explains how to divide a fraction by a whole number using the 'keep, switch, flip' method. He demonstrates this process with two examples: dividing one-half by three and four-sevenths by six. The video emphasizes rewriting the division problem as a multiplication problem by keeping the first fraction, switching the division to multiplication, and flipping the second number to its reciprocal. Each example is solved step-by-step, including simplification of the final answer. The video concludes with a summary of the method and encourages viewers to practice the technique.

What is the first step in the 'keep, switch, flip' method?

• Multiply the fractions

• Flip the second number

• Keep the first fraction

• Switch the operation

Tags

CCSS.5.NF.B.7A

CCSS.5.NF.B.7C

In the example of dividing one-half by three, what operation do we switch to?

• Addition

• Subtraction

• Multiplication

• Division

Tags

CCSS.3.NF.A.3C

How do you represent the whole number 3 as a fraction?

• 1/1

• 3/3

• 1/3

• 3/1

Tags

CCSS.5.NF.B.6

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

• 1/5

• 1/4

• 1/6

• 1/3

What is the simplified form of 4/42?

• 1/21

• 2/21

• 2/42

• 4/21

What is the greatest common factor of 4 and 42?

• 6

• 4

• 2

• 1

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

In the second example, what is the reciprocal of 6?

• 1/6

• 6/1

• 1/3

• 3/1

Tags

CCSS.5.NF.B.6

What is the result of multiplying 4/7 by 1/6?

• 1/21

• 4/21

• 1/42

• 4/42

What is the first step in simplifying a fraction?

• Add the numerators

• Find the greatest common factor

• Multiply the denominators

• Subtract the numerators

What is the final simplified answer for four-sevenths divided by six?

• 1/6

• 4/42

• 1/21

• 2/21