Sunday, November 1, 2009

Kathleen's Rate Growing Post

WWAAZZAAPP!

PART 1


DEFINITION :

  • RATIO - measures two different quantities measures in the SAME unit .
  • RATE - compares two quantities measured in DIFFERENT unit .

DIFFERENCE :
  • The difference between a rate and a ratio is the unit .

QUESTION : PAGE 60
Determine the unit rate in each situation.
a) An orca swims 110 km in 2 h.

  • 55km/h
b) A Canada goose flies 800 km in 12.5 h.
  • 64km/h
c) Cathy plants 45 daffodils in 30 min.
  • 2daffodils/minutes

PAGE 61
Trevor rode his mountain bike 84 km in 3 h. Jillian rode 70 km in 2.5 h. Who is the faster cyclist? How do you know?












COIN QUESTION :

How many dimes would there be in 2 jar ?
If there were 2600 dimes in 2 jars , how many would there be in one ?
(make a ratio table) find the UNIT RATE .
dimes|jar
divide by 2 2600 | 2 divide by 2
1300 | 1
So the UNIT RATE would be , 1300dimes/jar .


PART 2
















1) What would the recipe look like if it had to serve 10 people ? Show your calculations.

- 10/4 = 2.5
  • ground beef - 0.5 x 2.5 = 1.25 lb
  • medium onion, diced - 1 x 2.5 = 2.5
  • stalk celery finely diced - 1 x 2.5 = 2.5
  • clove garlic, minced - 1 x 2.5 = 2.5
  • canned tomatoes, chopped - 14 x 2.5 = 35 oz
  • can tomato paste - 0.5 x 2.5 = 1.25
  • parsley - 1 x 2.5 = 2.5 tsp
  • basil - 1.5 x 2.5 = 3.75 tsp
  • oregano - 1 x 2.5 = 2.5 tsp
  • sugar - 1 x 2.5 = 2.5 tsp
  • Worcestershire Sauce - 0.5 x 2.5 = 1.25 tsp
  • seasoning salt - 0.5 x 2.5 = 1.25 tsp
  • bay leaf - 1 x 2.5 = 2.5

2) What would the recipe look like if you had to only serve 1 person ? Show your calculations .
- 10÷1 = 10
  • ground beef - 1.25 ÷ 10 = 0.125 lb
  • medium onion, diced - 2.5 ÷ 10 = 0.25
  • stalk celery finely diced - 2.5 ÷ 10 = 0.25
  • clove garlic, minced - 2.5 ÷ 10 = 0.25
  • canned tomatoes, chopped - 35 ÷ 10 = 3.5 oz
  • can tomato paste - 1.25 ÷ 10 = 0.125
  • parsley - 2.5 ÷ 10 = 0.25 tsp
  • basil - 3.75 ÷ 10 = 0.375 tsp
  • oregano - 2.5 ÷ 10 = 0.25 tsp
  • sugar - 2.5 ÷ 10 = 0.25 tsp
  • Worcestershire Sauce - 1.25 ÷ 10 = 0.125 tsp
  • seasoning salt - 1.25 ÷ 10 = 0.125 tsp
  • bay leaf - 2.5 ÷ 10 = 0.25

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