Unit 2 Review #1

18 vocab words learned in 2 hours; 27 vocab words learned in 3 hours

• yes, equivalent
• no, not equivalent

$15 for 5 pairs of socks; $25 for 10 pairs of socks

• yes, equivalent
• no, not equivalent

20 out of 45 students attended the concert; 12 out of 25 students attend the concert

• yes, equivalent
• no

15 minutes to drive 21 miles; 25 minutes to drive 35 miles

• yes, equivalent
• no

120 calories in 2 servings; 360 calories in 6 servings

• yes, equivalent
• no

There are 21 boys and 6 girls in Mr. Keys' homeroom.  What is the ratio of girls to boys?  

• 6:21
• 21:6
• 2:7
• 7:2

Mr. Keys has 11 Playstation 4 games and 13 Nintendo games.  What is the ratio of PS4 games to Nintendo games?

• 5:7
• 1 to 3
• 13/11
• 11/13

Mr. Keys made $90 in 5 hours.  What is the unit rate?  

• $18 per hour
• $1 in 18 hours
• $90:5h
• 5 to 90

Which is NOT equivalent to 3:5?

• 15:25
• 9:15
• 21:28
• 30:50

What is a Ratio?

• Is a comparison of two quantities 
• A rate with a denominator of one
• It is when the only factor the numerator and denominator share is a one 
• Two decimals that can be multiplied