Operations with Fractions

This video tutorial covers the concepts of multiplying and dividing fractions. It begins with an introduction to the topic, explaining that unlike addition and subtraction, fractions can be multiplied and divided without needing a common denominator. The video provides several examples of multiplying fractions, including handling negative fractions and whole numbers. It then transitions to dividing fractions, emphasizing the use of the reciprocal of the second fraction. The tutorial concludes with examples of dividing fractions, reinforcing the concept of multiplying by the reciprocal.

What must be true for fractions to be added or subtracted?

• They must have the same numerator.

• They must have the same denominator.

• They must be negative.

• They must be positive.

Tags

CCSS.5.NF.B.6

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

• 1/6

• 1/9

• 2/9

• 3/9

Tags

CCSS.7.NS.A.2A

How should you handle a negative sign when multiplying fractions?

• Apply it to the denominator only.

• Apply it to the numerator only.

• Apply it to both numerator and denominator.

• Ignore it.

Tags

CCSS.5.NF.B.6

What is the simplified result of multiplying 1/4 by 2/4?

• 2/16

• 1/8

• 1/4

• 1/2

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

How do you treat whole numbers when multiplying them by fractions?

• As if they are over 10.

• As if they are over 2.

• As if they are over 1.

• As if they are over 100.

Tags

CCSS.7.NS.A.2A

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

• -1

• -2

• -6

• -3

Tags

CCSS.7.NS.A.2A

What is the reciprocal of 5/4?

• 1/4

• 5/5

• 4/4

• 4/5

Tags

CCSS.6.NS.A.1

What is the result of dividing 1/2 by 5/4?

• 2/4

• 1/5

• 4/5

• 2/5

Tags

CCSS.6.NS.A.1

What is the result of dividing 2/9 by 1/3?

• 1/3

• 6/9

• 3/2

• 2/3

Tags

CCSS.7.NS.A.2B

What is the result of dividing -1/2 by -8/7?

• 7/16

• 1/16

• 8/14

• 7/14

Tags

CCSS.7.NS.A.2B