Mastering Multiplying Fractions and Cross Cancelling

This video tutorial explains how to multiply fractions, highlighting that it is simpler than adding or subtracting fractions. It covers the basic method of multiplying numerators and denominators, introduces the cross cancelling technique to simplify the process, and addresses common mistakes students make. The tutorial includes several examples to illustrate these concepts and provides practice problems to reinforce learning.

What is the first step in multiplying fractions?

• Divide the denominators

• Subtract the denominators

• Add the numerators

• Multiply the numerators

Tags

CCSS.5.NF.B.6

What is the product of 4/5 and 2/3?

• 4/15

• 6/15

• 8/15

• 8/10

Tags

CCSS.5.NF.B.6

What is cross-canceling?

• Adding the numerators and denominators

• Simplifying fractions before multiplying

• Subtracting the numerators and denominators

• Multiplying fractions directly

Tags

CCSS.5.NF.B.6

In the example 5/9 * 12/13, what common factor is used to simplify 9 and 12?

• 2

• 3

• 4

• 5

Tags

CCSS.5.NF.B.6

What is the simplified product of 5/9 and 12/13 after cross-canceling?

• 5/13

• 60/117

• 12/39

• 20/39

Tags

CCSS.5.NF.B.6

What is a common mistake students make when cross-canceling?

• Canceling out two numerators

• Multiplying before simplifying

• Adding the fractions

• Dividing the denominators

What is the product of 2/5 and 8/12 after cross-canceling?

• 1/3

• 4/15

• 2/3

• 2/15

Tags

CCSS.5.NF.B.6

What is the simplified product of 24/30 and 4/60?

• 25/6

• 6/15

• 5/25

• 6/25

Tags

CCSS.5.NF.B.6

In the final mega question, what is the product of all the fractions after cross-canceling?

• 1/16

• 3/16

• 1/8

• 3/8

Tags

CCSS.5.NF.B.6

What is the benefit of cross-canceling when multiplying fractions?

• It eliminates the need to simplify the final product

• It makes the fractions larger

• It adds the fractions together

• It subtracts the fractions

Tags

CCSS.5.NF.B.6