Proportions, and Percentages

How do we solve math problems?

• Use the correct math structure such as an equation to solve the problem.

• Show all your work.

• Write down what you know, and write down what you are looking for.

• All of the above.

Tags

CCSS.2.OA.A.1

 $\frac{x}{100}=\ \frac{15}{25}$  Solve for x. (round to nearest hundredth)

• 75.00

• 166.67

• 60.00

• 166.00

How do I go from

 $\frac{x}{100}=\ x\%$  ?

• divide by 100

• multiply by 100

• multiply by 10

• divide by 10

How do I go from

 $\frac{part}{whole}=\ x\%\ to\ Part=\ x\%\ \cdot\ whole\ ?$  

• multiply by the part

• divide by the whole

• divide by the part

• multiply by the whole

How do I get from

 $\frac{part}{whole}=\frac{x}{100}\ to\ \ part=\ percent\cdot whole\ ?$  

• convert x/100 into a percent and then multiply by whole

• convert x/100 into decimal and then multiply by part

• convert x/100 into a percent and then multiply by part

• convert x/100 into a decimal and then divide by the whole

part= percent * whole is the (a)   equation

9 = 3*x, How do you solve for x?

• subtract 3 from both sides of the equation

• divide by 3 on both sides of the equation

• multiply by 3 on both sides of the equation

• add 3 to both sides of the equation

Tags

CCSS.6.EE.B.7

9 = .25*x , how do you solve this equation?

• divide by .25 to both sides of the equation

• multiply by .25 to both sides of the equation

• subtract .25 from both sides of the equation

• multiply by .25 to only the right side of the equation

Tags

CCSS.6.EE.B.7

Mark sells cars and he earns a 20% commission on the sales of the cars he sells. If Mark makes a commission of $420.00, how much in sales did Mark make?

• $2100.00

• $84.00

• $840.00

• $1400.00

Tags

CCSS.6.RP.A.3C

Al's Furniture is having a sale. They are selling Televisions at 30% off. The original price of the Televisions are $139.00. What is the sale price of the TV?

• $46.33

• $97.30

• $41.70

• $90.35

Tags

CCSS.6.RP.A.3C