Ratios
Write 6 girls to 8 boys as a ratio in 3 ways.
6/8
6:8
For every 6 girls there are 8 boys.
Are 2/3 and 4/6 equivalent?
YES they are equivalent!
2 x 2 = 4 and 3 x 2 = 6
OR
2/3 =0.67
4/6 = 0.67
Anna earns $12 in 3 hours. How much does she make in 1 hour?
$4
12/3=4/1
Write 10 limes to 6 lemons as a ratio in 3 ways.
10:6
10/6
For every 10 limes there are 6 lemons.
Are 1/6 and 2/7 equivalent?
Not Equivalent
1/6 = 0.167
2/7 = 0.29
Ramon gets 10 points in 4 games. How many does he get in 8 games?
20 points
10/4=20/8
What are the 3 ways we write a ratio.
Sentence
Fraction
Colon
Are 4/7 and 36/63 equivalent?
YES they are equivalent!
4 x 9 = 36, and 7 x 9 = 63
OR
4/7 = 0.57
36/63 = 0.57
Henry reads 8 pages in 6 minutes, then he reads 40 pages in how many minutes?
30 minutes
8/6=40/30
A comparison between two numbers is called a ______.
ratio
Are 14/15 and 42/45 equivalent?
Yes equivalent, 14 x 3 = 42, 15 x 3 = 45
OR
14/15 = .93
42/45 = .93
Julia texts 60 words in 4 minutes, and Tristan text 75 words per 5 minutes. Who texts the fastest per minute?
Neither, they both text at the same rate.
60/4=15
75/5=15
What are the 2 ways to write an equivalent ratio?
A. Adding
B. Subtracting
C. Multiplying
D. Dividing
C. Multiplying
D. Dividing
The definition of equivalent ratios
Two ratios that express the same relationship between numbers.
Curtis studies 25 hours for 2 tests, and studies 100 hours for how many tests?
8 tests
25/2=100/8