Adding and Subtracting Decimals

Front

What is the process of adding decimals?

Back

To add decimals, align the decimal points and add each column starting from the right, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the decimal points and subtract each column starting from the right, borrowing if necessary.

Front

What is the value of 4.18 + 3.11?

Back

7.29

Front

What is the value of 3.49 + 4.60?

Back

8.09

Front

What is the difference between 852.26 and 45.54?

Back

806.72

Front

What is the value of 9.45 - 8.42?

Back

1.03

Front

True or False: 6.47 + 3.26 equals 9.73.

Back

False, it equals 9.73.

Front

What is the importance of aligning decimal points when adding or subtracting?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.

Front

What is a common mistake when adding or subtracting decimals?

Back

A common mistake is misaligning the decimal points, leading to incorrect sums or differences.

Front

How can you check your work after adding or subtracting decimals?

Back

You can check your work by reversing the operation (e.g., subtracting the sum from one of the addends) or using estimation.