Adding and Subtracting Decimals with Models

Miss Luke teaches how to add and subtract decimals using models. She explains the concept of tenths and hundredths, and demonstrates how to use area models to add and subtract decimals. The video covers the representation of decimals in models and how to calculate the results by combining or subtracting these models.

What is the main topic of the video tutorial?

• Multiplying decimals

• Adding and subtracting decimals

• Dividing decimals

• Rounding decimals

In the first model, what do the tiny squares represent?

• Hundredths

• Tenths

• Ones

• Thousandths

How many hundredths are represented in the first model?

• 30

• 36

• 40

• 50

In the second model, how many tenths are shown?

• 5

• 4

• 3

• 2

What is the total when combining the two models?

• 0.91

• 0.71

• 0.81

• 0.61

How many tenths are there in the combined model?

• 6

• 7

• 9

• 8

What does each large square shaded in represent in the subtraction model?

• One tenth

• One hundredth

• One whole

• One thousandth

How many wholes are being subtracted in the subtraction model?

• 1

• 4

• 2

• 3

What is the final answer after subtracting the decimals in the model?

• 1.12

• 1.20

• 1.21

• 1.02