Adding and Subtracting Decimals with Models

What are we learning to do in this tutorial?

• Multiply and divide decimals

• Add and subtract decimals using models

• Convert fractions to decimals

• Solve algebraic equations

How many boxes are there in a 100th grid?

• 50

• 200

• 10

• 100

In the addition example, how many tenths are there in 32 hundredths?

• 2

• 3

• 5

• 4

How many hundredths are added to 32 hundredths in the example?

• 10

• 15

• 17

• 20

What is the sum of 32 hundredths and 17 hundredths?

• 0.60

• 0.32

• 0.49

• 0.50

In the subtraction example, how many whole rows are there in 79 hundredths?

• 6

• 8

• 7

• 5

What is 6 tenths equivalent to in hundredths?

• 40 hundredths

• 50 hundredths

• 30 hundredths

• 60 hundredths

How many whole rows are subtracted in the subtraction example?

• 4

• 5

• 7

• 6

What is the final answer to 79 hundredths minus 60 hundredths?

• 0.19

• 0.20

• 0.21

• 0.22

What should you do if you need help with the material?

• Search online

• Let the teacher know

• Review the video again

• Ask a friend