Understanding Ratios and Proportions

This video tutorial teaches how to convert between part-to-part and part-to-total ratios using visual aids. It explains how to identify hidden information within ratios and demonstrates the conversion process with examples. The lesson emphasizes understanding the relationship between different parts of a group and the total, using both part-to-part and part-to-total ratios.

What does a ratio of five boys for every two girls represent?

• A part-to-total ratio

• A total-to-total ratio

• A total-to-part ratio

• A part-to-part ratio

How can you write a part-to-total ratio from a picture?

• By counting only the boys

• By counting only the girls

• By considering both parts and the total

• By ignoring the total number of students

What is the part-to-total ratio for three boys in a group of five students?

• 3 to 5

• 3 to 2

• 5 to 3

• 2 to 5

How do you find hidden information in a part-to-part ratio?

• By ignoring the total

• By focusing only on one part

• By considering the total number of students

• By looking at the ratio backwards

What is the total number of students if there are five boys and two girls?

• 10

• 12

• 7

• 5

If one boy is in a group of four students, what is the part-to-part ratio of boys to girls?

• 1 to 3

• 3 to 1

• 1 to 4

• 4 to 1

What is the part-to-total ratio of girls if there are three girls in a group of four students?

• 3 to 1

• 1 to 3

• 4 to 3

• 3 to 4

How can you convert a part-to-total ratio into a part-to-part ratio?

• By dividing the total by the parts

• By identifying the other part not mentioned

• By adding the parts together

• By subtracting the total from the parts

What is the part-to-part ratio of girls to boys if there are three girls and one boy?

• 3 to 4

• 4 to 3

• 3 to 1

• 1 to 3

What is the key takeaway from learning about ratios in this lesson?

• Ratios are not useful in real life

• Ratios are only about girls

• Ratios are only about boys

• Ratios can be converted between part-to-part and part-to-total