Understanding Ratio: Comparing, Simplifying, Sharing, and Using Map Scale Ratios

The video tutorial introduces the concept of ratios, explaining how they represent the relationship between quantities. It covers expressing ratios, simplifying them like fractions, and using them to share quantities. The tutorial also discusses the application of ratios in map scales, including converting map distances to real-life measurements using scale factors.

What is the correct way to express the ratio of 4 red counters to 5 blue counters?

• 5:4

• 9:1

• 1:9

• 4:5

How do you simplify the ratio 6:9?

• 1:3

• 3:1

• 3:2

• 2:3

If a class has a ratio of 15 boys to 5 girls, what fraction of the class are girls?

• 1/4

• 1/5

• 1/3

• 1/2

What is the first step when sharing an amount in a given ratio?

• Multiply by the original ratio

• Divide the amount by the total number of parts

• Add the parts together

• Simplify the ratio

If a map scale is 1:25,000, how do you convert a map distance to real life?

• Subtract 25,000

• Add 25,000

• Multiply by 25,000

• Divide by 25,000