Ratios
Write 22 : 33 in two more ways
22/33, 22 to 33
The ratio of ants to mosquitos is 3:5. How many ants will be when there are 15 mosquitos.
9 ants
Find the unit rate
$ 4.80 for 4 pencils
$1.20 for 1 pencil
Which of the two rates is larger?
57 km in 3 hours or 80 km in 4 hours
80 km in 4 hrs = 20 km per hour
5 hours = _____ minutes
300 minutes
A ratio is a _______ of two numbers using _____.
comparison, division
ants 2 ?
mosquitos 5 15
total insects ? ?
ants 6
total insects 7, 21
Find the unit rate
60 miles in 2 hours
30 miles in 1 hour
Brand A sells a 16-ounce bottle of salad dressing for $3.52. Brand B sells a 24-ounce bottle of the same dressing for $5.04. Which brand is the better buy?
Brand B - .21 cents per ounce
48 inches = ______ feet
4 feet
A ___________ is a _____ model that can be illustrate to illustrate _____.
tape diagram, visual, ratios.
complete the ratio chart
ants 2 12 ?
mosquitos 5 ? 50
total insects 7 42 ?
ants 20
mosquitos 30
total insects 70
What is 12 meters in 3 minutes as a unit rate?
4 meters per minute.
A 20-ounce jar of peanut butter costs $8.00. A 30-ounce jar costs $10.50. Which jar of peanut butter is cheaper per ounce?
A 30 ounce jar is cheaper, you will pay .35 cents per ounce.
If I want to do a conversion from a small unit to a big unit, I will______. If I want to do a conversion from a big unit to a small unit, I will______.
divide, multiply
Ten puppies and 8 kittens are being given away.
a) Write the ratio of puppies to kittens that are being given away.
10 to 8
Simplify the ratio
15:20
3:4
Which rate is equivalent to 5 cakes for $95.
10 cakes for $190
1 cake for $19
Both
Luke drove 120 miles in 4 hours. It took Kim 6 hours to drive 180 miles. Who drove slower?
Neither person drove slower; they both drove at the exact same speed.
30 miles per hour.
3 kilograms = _____ grams
3,000 grams
The ratio of men to women at a basketball game was 4 : 3.
Use a ratio table to determine the number of women at the game if there are 80 men at the game.
60 woman
The ratio of the width to length of a rectangular patio is 2 : 3. If the width of the patio is 6 yards, find the area of the patio in square yards
54 square units
Daily Double
Denise filled her wading pool using a hose. The pool filled at a rate of 7 gallons every 2 minutes. She let? the water on for 9 minutes. How many gallons of water were in the wading pool?
31.5 gallons
A compact car travels 105 miles on 3 gallons of gas. An SUV travels 176 miles on 8 gallons of gas. Which vehicle gets better gas mileage?
The compact car gets better gas mileage because it travels more miles per single gallon of gas.
35 miles per gallon
Problem: 40 centimeters = _____ meters
I know: 1 meter = 100 centimeters
My work:40 centimeters × 100 = 4,000
meters.
Answer: 40 centimeters = 4,000 meters
Is this person correct? Yes or No. Why?
Wrong, because to convert centimeters to meters, you divide by 100, not multiply.
40÷100=0.4