Finding Percentages and Whole Numbers

The video tutorial covers solving percent problems using models and proportional reasoning. It explains how to use diagrams and bar models to visualize percent problems and provides examples and guided practice to reinforce learning. The tutorial also discusses finding the percent, part, or whole in various scenarios, emphasizing the use of proportional reasoning and multiplication to solve these problems.

If a shipment contains 400 baseball gloves and 30% are left-handed, how many left-handed gloves are there?

• 150

• 180

• 120

• 100

In a bar model representing 400 gloves, what does each 10% segment represent?

• 60 gloves

• 40 gloves

• 30 gloves

• 50 gloves

How do you calculate 30% of 400 using multiplication?

• 30 x 400

• 30 x 40

• 30 x 100

• 30 x 4

What is the part if you need to find 28% of 25?

• 5

• 6

• 7

• 8

If 21 out of 300 dollars is spent on a gift, what percent of the paycheck is that?

• 5%

• 6%

• 7%

• 8%

Out of 25 students, 19 have a pet. What percent of the students have a pet?

• 78%

• 72%

• 76%

• 74%

If 12 students make up 24% of the choir, how many students are in the choir?

• 45

• 50

• 55

• 40

How do you find the whole if 6 is 30% of it?

• 22

• 20

• 18

• 24

If 15% of a number is 75, what is the whole number?

• 450

• 500

• 550

• 400

What is the first step in solving a percent problem using proportional reasoning?

• Set up the proportion

• Read the problem

• Find the part

• Find the whole