Finding Percentages Using Models

The video tutorial reviews solving percent problems using models and diagrams. It demonstrates finding 40% of 60 through two strategies: equivalent fractions and a double number line. The teacher explains the mental math check for verification and concludes with a summary and homework assignment.

Which of the following is NOT a model used to solve percent problems?

• 10 by 10 grids

• Tape diagrams

• Bar graphs

• Double number lines

What is the equivalent fraction of 40%?

• 1/4

• 2/5

• 40/100

• 4/10

If 40% of 60 is calculated using equivalent fractions, what is the result?

• 36

• 30

• 24

• 20

What is the first step in using a double number line to find 40% of 60?

• Divide 60 by 10

• Find 50% of 60

• Mark 100% as 60

• Divide 60 by 4

How many equal parts is the double number line divided into to find 40% of 60?

• 5

• 4

• 6

• 10

What is the value of each part when 60 is divided into 10 equal parts?

• 12

• 10

• 6

• 5

What is the result of 30 divided by 5 in the context of the double number line?

• 10

• 5

• 6

• 12

What is the final value of 40% of 60 using the double number line method?

• 30

• 24

• 36

• 20

Which strategy involves dividing the whole into 10 equal parts?

• Bar graph

• Tape diagram

• 10 by 10 grid

• Double number line

How many problems are assigned from the problem set in lesson 26?

• 5

• 4

• 3

• 2