Adding and Subtracting Decimals

Front

What is the process of adding decimals?

Back

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

Front

What is the process of subtracting decimals?

Back

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

Front

How do you align decimals when performing addition or subtraction?

Back

You align the numbers vertically by their decimal points, ensuring that the digits are in the correct columns (ones, tenths, hundredths, etc.).

Front

What is the value of 17 - 8.63?

Back

8.37

Front

What is the value of 24.98 + 24.50?

Back

49.48

Front

What is the value of 3.86 + 0.98?

Back

4.84

Front

What is the value of 26 + 87.45?

Back

113.45

Front

What is the value of 12.61 - 3.9?

Back

8.71

Front

What is a common mistake when adding or subtracting decimals?

Back

A common mistake is misaligning the decimal points, which can lead to incorrect sums or differences.

Front

Why is it important to understand place value when adding or subtracting decimals?

Back

Understanding place value is crucial because it ensures that each digit is in the correct column, which affects the accuracy of the calculation.