Solving Fraction Equations with Cross Multiplication

What is the primary reason for using cross multiplication in solving equations?

• It requires fewer steps.

• It is the easiest method to learn.

• It works with any type of fraction.

• It is faster than all other methods.

Tags

CCSS.6.EE.B.7

In the equation 12/60 = 5/X, what do you multiply to perform cross multiplication?

• 12 with 60 and 5 with X

• 12 with X and 60 with 5

• 12 with 5 and 60 with X

• X with 5 and 12 with 60

After cross multiplying and simplifying 12x = 300, what is the value of X?

• 30

• 15

• 20

• 25

Tags

CCSS.6.EE.B.7

What is the shortcut method for cross multiplication primarily designed to do?

• Eliminate the need for division

• Reduce writing and simplify steps

• Avoid multiplication

• Increase calculation speed

Tags

CCSS.6.EE.B.7

When solving 12/15 = X/10 using cross multiplication, what is the correct value of X?

• 10

• 15

• 12

• 8

Tags

CCSS.7.RP.A.3

How do you verify that your solution to a cross multiplication problem is correct?

• By substituting X back into the original equation

• By performing addition on the results

• By asking a peer

• By consulting a calculator

Tags

CCSS.6.EE.B.7

What is the result of cross multiplying in the equation where X is in the bottom left corner and the equation is 10/9 = X/18?

• X = 15

• X = 20

• X = 5

• X = 10

Tags

CCSS.6.EE.B.7

What does reducing fractions to their lowest terms help verify?

• The equivalence of the fractions

• The complexity of the fractions

• The sum of the fractions

• The difference between the fractions

What is the final value of X when it is in the upper left-hand corner and the equation is 24/36 = X/12?

• 36

• 24

• 12

• 8

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

According to the lesson, why is cross multiplication a reliable method for solving equations?

• It is the newest method available.

• It only works for simple fractions.

• It works regardless of the fraction's complexity.

• It is less accurate than other methods.

Tags

CCSS.6.EE.B.7