Ratios
A ratio is a ___________ between two or more numbers.
Relationship or Comparison
For every 4 hot dogs, 5 sodas are sold. What is the ratio of sodas to hot dogs sold?
5 to 4; 5:4; 5/4
All answers above are acceptable.
What is the unit rate if Emma reads 100 pages in 4 hours?
25 pages in an hour.
What value of x makes these ratios equivalent?
x:6 = 6:9
What is 4
What is another word for "equivalent"?
Proportional
Write 3 equivalent ratios.
Answers will vary, must be confirmed by opposing player (if playing against someone)
There are 3 pineapples and 5 bananas. What is the ratio of bananas to total fruit?
5:8
What is the unit rate for 4 trays with 40 ice cubes
10 ice cubes per tray
What value of x makes these ratios equivalent?
x/6 = 8/12
What is 4
Is this a proportion?
2/3 and 4/6
Yes
What two operations will produce equivalent ratios?
A. Adding
B. Subtracting
C. Multiplying
D. Dividing
C, D: Multiplying and Dividing
Which is a better buy?
2 lbs of apples for $4 OR 5 lbs of pears for $15?
The 2 pounds of apples are a better buy because the apples costs $2 a pound while the pears cost $3 for a pound.
$5.40 for 24 cans
$0.225 for 1 can
What value of x makes these ratios equivalent?
6/10 = 18/x
What is 30
Is this a proportion?
14/28 and 1/3
No
Write 11 limes to 6 lemons as a ratio in 3 ways.
11:6, 11/6, 11 to 6
All ratios are actual fractions that show a part of a whole. True or False?
False: All fractions ARE Part-to-Whole ratios, but Part-to-Part ratios are not fractions.
What are unit rates?
They are rates per one unit.
What value of x makes these ratios equivalent?
x/12 = 9/36
What is 3
Is this proportion?
15/32 and 30/64
Yes
There are 34 boys and 35 girls in the 5th grade at the Swanson School for Short Stops. If 14 of the boys were wearing hats, and 23 girls were not wearing hats, what is the ratio of girls to boys that were not wearing hats?
23:20
Kami bought 3 lbs of nectarines for $1.50 and 2 lbs of oranges for $0.60. Which fruit cost less per pound?
The oranges are a better buy because it cost $0.30 per pound while the nectarines cost $0.50 per pound.
What is the unit rate if Bryan buys 3 movie tickets for $42?
$14 per ticket
What value of x makes these ratios equivalent?
3:8 = 15:x
What is 40.
Is this a proportion?
16/21 and 32/63
No