Exploring Double Sided Number Lines and Ratios

The video tutorial introduces the concept of ratios and demonstrates how to use double number lines to solve various problems. Examples include calculating costs for Rubik's cubes, determining soccer goals, analyzing Animal Crossing scenarios, and evaluating sports practice days. The tutorial concludes with a business-related example of closing deals, emphasizing the importance of consistent labeling and understanding relationships in ratios.

What is the primary purpose of using a double number line?

• To calculate percentages

• To compare two different units

• To measure distances

• To solve algebraic equations

If 12 Rubik's cubes cost $48, how much would 4 Rubik's cubes cost?

• $24

• $12

• $16

• $20

In the first example, what is the relationship between the number of Rubik's cubes and the cost?

• Multiply by 4

• Subtract 4

• Divide by 3

• Add 12

If Ali scores 4 goals, how many goals does Jojo score?

• 5

• 4

• 3

• 2

If Jojo scores 15 goals, how many goals does Ali score?

• 25

• 10

• 15

• 20

For every 3 bears on April's island, there are 5 dogs. How many dogs are there if there are 21 bears?

• 40

• 30

• 25

• 35

If Cole practices basketball for 18 days and baseball for 30 days, how many days of baseball will he practice if he practices basketball for 9 days?

• 18

• 15

• 12

• 10

In the problem involving Cole, what is the ratio of basketball to baseball practice days?

• 3:2

• 2:3

• 5:3

• 3:5

Chris closes 5 out of every 7 deals. If he has 35 deals, how many deals does he close?

• 30

• 35

• 25

• 20

In the problem involving Chris, how many deals does he not close if he has 35 deals?

• 5

• 12

• 7

• 10