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? Give 3 equivalent ratios.
What is 5 to 4, 10:8, 15\12
2/3 and 4/6
Equivalent. There is a common factor of 2 between the two ratios.
What value of x makes these ratios equivalent?
x:6 = 12:18
What is 4
See Slide #39
Write 11 limes to 6 lemons as a ratio in 3 ways.
11:6, 11/6, 11 to 6
Ratios can ONLY be written as fractions. True or False?
False: Ratios can be written 3 different ways.
1/6 and 2/7
Not Equivalent. No common factor between the two ratios
What value of x makes these ratios equivalent?
x/12 = 9/36
What is 3
See Slide #40
What is 21 and 56
What is another word for "equivalent"?
Equal
There are 3 pineapples and 5 bananas. What is the ratio of bananas to total fruit?
5:8
6/8 and 9/12
Yes 6/8= 3/4 9/12= 3/4
What value of x makes these ratios equivalent?
x/6 = 8/12
What is 4
See Slide #41
What is..
Multiply each number by 2.
Divide each number by 4.
Multiply each term by 1/8.
What are the three ways you can write ratios?
a/b, a to b, a:b
True or false: These are equivalent ratios...
16:24 and 18:30
False
5/10 and 4/8
yes 5/10 = 1/2 4/8= 1/2
What value of x makes these ratios equivalent?
6/10 = 18/x
What is 30
See Slide #42
What is 48, 36
What two operations will produce equivalent ratios?
A. Adding
B. Subtracting
C. Multiplying
D. Dividing
What is C & D Multiplying and Dividing
Write 3 equivalent ratios.
Answers will vary, must be confirmed by opposing player (if playing against someone)
9/20 and 3/10
Not Equivalent. No common factor between the two ratios
What value of x makes these ratios equivalent?
3:8 = 15:x
What is 40.
See Slide #43
What is $20, 22.5