Unit 1: Unit Pricing and Currency Exchange

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Presentation transcript:

Unit 1: Unit Pricing and Currency Exchange

Warm Up:

SIDNEY CROSBY, HOCKEY PLAYER DISCUSS THE IDEAS SIDNEY CROSBY, HOCKEY PLAYER At the 2010 Olympic Winter Games in Vancouver, British  Columbia, Sidney Crosby of Cole Harbour, Nova Scotia, scored  the gold medal–winning goal in men’s hockey. Team Canada,  which had been playing at a furious paceagainst the United  States, won the game with a score of 3 to 2. In the 2001–2002 season, when Crosby was playing for the  Dartmouth Subways, he scored 95 goals and earned 193  points in 74 games. How would you calculate the average  number of points he earned per game?

What is a Rate? different units. Rates – similar to a ratio but compares two numbers with  different units. Examples: • the number of words you can type per minute  • the number of hamburgers a concession stand   sells each day  • the price of lumber per linear foot  • the speed at which you run    Words/minutes  Km/h  $/ft

Example 1 If halibut steaks cost $2.49 for 100 g, how much  will it cost to buy 250 g of halibut steaks?  Method 1 Method 2

REMEMBER: Make sure you are comparing the same unit or units when you set up a proportion.

Your Turn A local plumbing store sells 100 copper-plated  pipe straps for $4.97. You have estimated that  you require 75 straps. How much will you pay for 75 straps?

We can also consider proportions of total amounts. Example: There are 12 marbles in a bag. We know that they are divided into 3 white for every 2 blue. How many blue marbles are in the bag?

Example: A recipe of cookies calls for 2 cups of sugar for 3 cups of flour. You want to make 5 batches, how much sugar do you need? You want to make 12 cups of cookie dough, how much of each ingredient will you need?

You are part of a taste tester team for a healthy lifestyle company You are part of a taste tester team for a healthy  lifestyle company. Your team is developing  some new drinks to put on the market. The  company has produced orange concentrate that  is packaged in 1-cup portions. Buyers will mix  the concentrate with water, and the best  proportions of concentrate to water need to be  identified. The company is considering two different  recipes. It is your team’s job to compare the recipes and produce a taste tester  report.

*In pairs! Complete a table like the one below for the company. A batch is one recipe. *In pairs!

To Do: Page 16: Activity 1.2 - Fruit Drink Taste Tester Finish Proportions Worksheet Side 2 (due tomorrow) Page 21 # 2, 4, 6, 8