Enter Title

Common Denominators

100

What is the common denominator of 1/4 and 4/8?

8

200

What is the common denominator of 2/3 and 1/4?

12

300

What is the common denominator of 2/7 and 4/14?

14

400

What is the common denominator of 1/20 and 5/50?

100

500

What is the common denominator of 3/12 and 1/5?

60

Proportions

100

1/3 = x/6

x= 2

200

7/11 = x/22

14

300

If there are 3 red marbles for every 5 blue marbles, how many red marbles are there if there are 15 blue marbles? 

3/5 = x/15

x = 9 red marbles 

400

The chicken coop is 3 ft wide x 4 ft long x 6 ft tall. If the farmer built a coop 3 times the size, what are the new dimensions of the coop?

9 ft x 12 ft x 18 ft

500

A vine in the jungle is 21 meters long. If a monkey climbs 3 meters in 4 seconds, how long does it take the monkey to climb the whole vine? Set up a proportion and solve. 

3m/4sec = 21m/? sec

28 seconds

Ratios

100

If this week had 3 sunny days, and 4 rainy days, what is the ratio of sunny to rainy days?

3:4

200

Write an equivalent ratio to 1:2

Answers vary

300

Are these ratios equivalent? Why or why not?

3 girls:2 boys

6 girls:5 boys

No

400

Write three equivalent ratios. 

Answers vary

500

Ty took the escalator to the second floor. The escalator is 12 meters long, and he rode the escalator for 30 seconds. Which statements are true? Select all that apply.

1. He traveled 2 meters every 5 seconds.
2. Every 10 seconds he traveled 4 meters.
3. He traveled 2.5 meters per second.
4. He traveled 0.4 meters per second.
5. Every 25 seconds, he traveled 7 meters.

a, b, d