Converting Between Part-to-Part and Part-to-Total Ratios with Pictures

The 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 in both directions. The lesson emphasizes understanding the relationship between different parts of a group and the total, using examples and pictures to illustrate the concepts.

What is a common mistake students make when working with ratios?

• Confusing ratios with percentages

• Ignoring the total number of items

• Using decimals instead of fractions

• Counting the same item twice

If there are 5 boys and 2 girls, what is the part-to-total ratio of boys to students?

• 7 to 5

• 5 to 7

• 5 to 2

• 2 to 5

How many total students are there if the part-to-part ratio is 5 boys to 2 girls?

• 7 students

• 2 students

• 10 students

• 5 students

In a group of 4 students, if 1 is a boy, what is the part-to-part ratio of boys to girls?

• 4 to 1

• 1 to 4

• 1 to 3

• 3 to 1

What is the part-to-total ratio of girls to students if there are 3 girls in a group of 4 students?

• 3 to 4

• 3 to 1

• 4 to 3

• 1 to 3