Rates, Rate of Change, Proportion

What is a Ratio?

• Is a comparison of two quantities 
• A rate with a denominator of one
• It is when the only factor the numerator and denominator share is a one 
• Two decimals that can be multiplied

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

When are unit rates useful? Choose the best answer.

• When you want to find the price of something that is on sale.

• When you want to find the price of multiple of something when you know the cost of one.

• When you want to compare prices.

• When you want to figure out a probability.

Unit means...

• one

• two

• three

• proportional

What mathematical operation does unit rates involve?

• addition

• subtraction

• multiplication

• division

If Justin ordered 5 ice cream bars for $12.25, how much was each ice cream bar?

• $2.45

• $4.00

• $7.25

• $1.25

You travel 150 miles on 5 gallons. How far did you travel per gallon?

• 15 miles

• 30 miles

• 3 miles

• 25 miles

At what rate did the rain fall?

• 2 cm per hour
• ¹/₄ cm per hour
• ¹/₂ cm per hour
• 4 cm per hour

Tags

CCSS.8.EE.B.5

Movie ticket sales are as follows:

Adult: 20 tickets for $250

Child: 15 tickets for $71.25

Senior: 5 tickets for $37.50

How much does one (1) ADULT ticket cost?

• $0.08

• $25

• $12

• $12.50

Is this graph proportional?

• Yes
• No

Tags

CCSS.7.RP.A.2D

What makes a graph proportional?

• Straight line

• The line goes through the origin

• Curvy line

• Straight line and the line goes through the origin