Presentation on theme: "R ATES Objective: Student find and compare unit rates such as unit rates and unit price."— Presentation transcript:
R ATES Objective: Student find and compare unit rates such as unit rates and unit price.
B ACK TO W RITING R ATIOS Suppose Ms. McLamb drove 75 miles in 3 hours. Write the ratio of miles to hours in fraction form. This is a rate.
R ATE What is a rate? A rate is a comparison of two quantities using division(sounds like ratios, right?) that have different units. Example: Reads “60 miles per 2 hours” This is a unit rate
U NIT R ATE What is a unit rate? A unit rate is a rate in which the denominator has a quantity of 1 unit. Example: 4 packets of oatmeal per 2 cup of water.
W RITING R ATES AND UNIT R ATES Find the unit rates and write them in fraction and word form. Kaylie biked 40 miles(mi) in 4 hours(hrs). Write to rate in fraction form. Find the unit rate. Write in word form. Kaylie rode 10 miles per hour. GCF of 40 and 4
U NIT P RICE What is a unit price? A unit price is a unit rate that compares cost to item(or cost per item) Example: $5 for 2 bags of family size chips
A PPLICATION The local farmers market sale lemonade in three sizes. Which size has the lowest price per fluid ounce? SizePrice 12 oz$ oz$ oz$ oz18 oz24 oz Since $0.07 <$0.09 the 12 oz lemonade has the lowest price per fluid ounce.
E XAMPLE 1: A faucet leaks 668 milliliters of water in 8 minutes. How many milliliter of water does the facet leak per minute?
E XAMPLE 2: In the 1 st Indianapolis 500, the winning car covered 500 miles in 6.7 hours. What as the car’s average rate of speed in miles per hour?
E XAMPLE 3: Which is the better deal, 450 texts for $49.99 or 800 texts for $62.99?