Adding and Subtracting Decimals Mastery

This video tutorial covers the addition and subtraction of decimals. It begins with an introduction to adding decimals, emphasizing the importance of aligning decimal points. Several examples are provided to illustrate the process, including the use of placeholders. The tutorial then transitions to subtracting decimals, again highlighting the need for decimal alignment and borrowing when necessary. Examples are given to demonstrate the subtraction process, ensuring a comprehensive understanding of both operations.

What is the first step when adding decimals?

• Subtract the digits in the same place value position

• Add zeros to the end of the decimals

• Line up the decimal points

• Add the digits in the same place value position

What is the sum of 23.1 and 5.8?

• 28.8

• 28.9

• 27.9

• 29.1

When adding 54.70 and 21.4, what placeholder should be added?

• 1

• 2

• 0

• None

What is the sum of 14.2 and 23.50?

• 37.70

• 37.00

• 37.50

• 37.20

What is the sum of 134.76 and 12.398?

• 149.158

• 148.158

• 146.158

• 147.158

What is the first step when subtracting decimals?

• Add the digits in the same place value position

• Add zeros to the end of the decimals

• Line up the decimal points

• Subtract the digits in the same place value position

What is the difference between 6 and 4.78?

• 1.22

• 1.52

• 1.32

• 1.42

What is the difference between 23 and 4.216?

• 20.784

• 17.784

• 19.784

• 18.784

What is the difference between 50.62 and 39.81?

• 13.81

• 12.81

• 11.81

• 10.81

What is the difference between 52.1 and 31.47?

• 20.63

• 21.63

• 22.63

• 23.63