Writing & using Ratios
Sam has 8 pieces of red paper and 2 pieces of blue paper. Write a ratio of blue to red paper.
2 to 8 or 2:8
Write 1 ratio that is equivalent to this ratio: 1/3
2/6, 3/9, 4/12, 5/15, 6/18 , 10/30
The odds (ratio) of winning a ball throwing carnival game are 2:3 . The odds of winning a balloon pop carnival game are 5:6. Which game has a better ratio/better odds of winning.
Complete the ratio table then plot the pairs of values on the coordinate plane.
1 2 3 4 5
2 ? ? ? ?
1 2 3 4 5
2 4 6 8 10
Haley drew 4 pictures of flowers and 10 pictures of cats. Write a ratio of the number of flower pictures to the total.
4:14 or 4 to 14
Write 2 ratios that are equivalent to 6 to 10
3 to 5
12 to 20
18 to 30
24 to 40
30 to 50
60 to 100
Mrs. Henderson has 4 boys in her class of 20 students. Mr. Gregory has 5 boys in his class of 30 students. Which class has the greater ratio of boys to students?
Henderson: Reduce to 1/5
Gregory: Equivalent to 1/6
So Henderson's class has a greater ratio because 1/5 is greater than 1/6.
Complete the ratio table then plot the points on the coordinate plane.
2 4 6 8
3 ? ? ?
2 4 6 8
3 6 9 12
A cleaning crew can clean 5 offices in 6 hours. How many offices can they clean in 12 hours?
10 offices
Write 3 ratios that are equivalent to 24: 4
12:2
6:1
48: 8
Edith & Sarah shoot free throws. Complete the tables. Who has a better ratio of baskets to shots?
Edith Baskets 1 2 ? 8 10
Shots 3 6 15 ? ?
Sarah Baskets 2 4 6 10 ?
Shots 5 ? 15 ? 50
Edith
Baskets 1 2 5 8 10
Shots 3 6 15 24 30
Sarah
Baskets 2 4 6 10 20
Shots 5 10 15 50 50
A car uses 5 gallons of gas for every 120 miles it travels. Complete the table then graph it.
Gas (gal) 5 ? 20
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Distance (mi) 120 360 ?
5 15 20
120 360 480
Joseph is planting a vegetable garden. He plants 2 tomato plants for every 5 pepper plants. If Joseph plants 14 tomato plants, how many pepper plants does he plant?
35 pepper plants
> , < , or =
6:10 ____ 8:15
6:10 > 8:15
Every 5 days during the week, Morgan sleeps 40 hours. How many days would it take him to sleep 200 hours?
25 days
A store charges $140 for every 10 bags of fertilizer a farmer buys. a. Complete the table. Graph the values.
Fertilizer 10 20 30
Cost 140 ? ?
10 20 30
140 280 420
A pet store keeps 4 small fish in every 10 gallons of water. How many gallons of water are needed for 36 fish?
90 gallons of water
Fill in the missing numbers in this table:
Reese Cups 2 4 5 ? 15
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Skittles 8 ? 20 40 ?
Reese Cups 2 4 5 10 15
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Skittles 8 16 20 40 60
In Mrs. Washington’s class, there are 2 students in band for every 3 students in chorus. In Mr. Utley’s class there are 5 students in band for every 7 students in chorus. Create two ratio tables. Which class has a greater ratio of students in band to students in chorus?
2 4 6 8 10
3 6 9 12 15
5 10 15 20 25
7 14 21 28 35
Gavin makes a homemade cleaner using 1/2 cup vinegar for every 2 quarts of water. a. Complete the table. Graph the values.
1/2 ? 1 1/2 2
2 4 ? 8
1/2 1 1 1/2 2
2 4 6 8