Ratios
In a drawing, there are three circles, four stars and three triangles. What is the ratio of stars to the total number of shapes?
What is 4:10? (or 2:5)
The three ways to write a ratio (using the numbers 1 and 2).
1 to 2 and 1:2 and 1/2
An equivalent ratio for 2:4
What is 4:8, 6:12, 8:16, etc.?
7:21 and 14:42
What is yes? (Both parts of 7:21 are multiplied by 2)
Abigail poured 9 ounces of juice from a bottle. Andy poured 16 ounces of juice from a bottle. What is the ratio of the amount of juice Abigail poured to the amount Andy poured?
What is 9:16?
The are 7 roses and 8 sunflowers in a garden. The ratio of sunflowers to roses is ____.
What is 8 to 7?
The are 19 girls and 16 boys in the bus. The ratio of girls to all the students on the bus is ______.
What is 19:35?
Write 3 equivalent ratios for 3:4.
What are 6:8, 9:12, and 12:16?
18:9 and 54:27
What is yes? (Both parts are multiplied by 3)
Last week Lauren spent 2 hours doing homework for every 3 hours she watched TV.
If she spent 8 hours doing homework how many hours did she spend watching TV? Use a double number line to find the answer.
What is 12 hours of TV?
What is the ratio of eyeballs to students in the class room?
What is 2:1?
Describe the tape diagram for the ratio 2:3.
What is two boxes (sections) on the top and three boxes (sections) on the bottom?
Which two of the following are equivalent ratios: 1:3, 4:9, 5:15, 7:30.
What are 1:3 and 5:15?
1:15 and 4:75
What is no? (1 x 4, and 15 x 5)
Ricky ate 3 of his 8 pieces of pizza. Celeste ate 6 of her 16 brownies. Are the ratios of what Ricky and Celeste ate equivalent?
What is yes? (3 and 8 are both multiplied by 2)
Scott has a bag of marbles. In the bag are 3 red, 2 green, 4 yellow, and 1 blue. What is the ratio of red to yellow?
What is 3:4?
The ratio of girls to boys in the 6th grade class room right now.
Depends on who showed up today.
What two mathematical operations can we use to find equivalent ratios?
Multiplication and division!
50:100 and 25:50
What is yes? (50 and 100 are both divided by 2)
There are 3 cars for every 4 trucks in a parking lot.
If there are 20 more trucks than cars, how many cars are there? Use a tape diagram to find your answer.
What is 60 cars?
Nathan has a bigger bag of marbles. In his bag are 17 red, 24 green, 13 yellow, and 96 blue. What is the ratio of red and green marbles to blue marbles?
What is 41:96?
The ratios of questions to answers in a game of jeopardy.
What is 1:1? (25:25)
Which ratio is not equivalent to the others?
2:4, 6:10, 1:2, or 4:8
What is 6:10?
2:12 and 16:96,
if yes what number are they multiplied or divided by?
What is yes and 8?
There are 2 apples for every 3 oranges.
If there is 50 total pieces of fruit, how many oranges are there? Use a tape diagram to show your work.
What is 30?