Solving Fractions and Proportions with Variables

What is a proportion in the context of fractions?

• An equation involving subtraction

• Two equal ratios or fractions

• A mathematical expression involving addition

• A single fraction that can be simplified

Tags

CCSS.7.RP.A.2A

How do you solve proportions involving variables?

• By adding the numerators

• Through cross multiplication

• Using subtraction across terms

• By dividing the denominators

Tags

CCSS.7.RP.A.2B

In the equation 2/3 = x/12, what is the value of x?

• 12

• 8

• 6

• 4

Tags

CCSS.7.RP.A.2B

What operation is used to isolate the variable x in the equation 3x = 24?

• Addition

• Multiplication

• Subtraction

• Division

Tags

CCSS.6.EE.B.7

In the proportion x/4 = 3/10, what does x equal after solving?

• 12

• 1.2

• 7.5

• 1.5

Tags

CCSS.7.RP.A.2C

What is the result of cross multiplying in the proportion x/4 = 3/10?

• 3x = 40

• 4x = 30

• 10x = 12

• x = 30

What is the simplified form of the fraction 12/10?

• All of the above

• 6/5

• 1 2/10

• 1 1/5

What mathematical operation finalizes solving the proportion x/4 = 3/10?

• Addition

• Subtraction

• Division

• Multiplication

Tags

CCSS.7.RP.A.3