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

How do you subtract decimals?

Back

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

Front

What is the sum of 1.70 and 4.65?

Back

6.35

Front

What is the sum of 456.1 and 345.98?

Back

802.08

Front

What is the sum of 35.61 and 12.93?

Back

48.54

Front

What is the difference between 0.835 and 0.423?

Back

0.412

Front

What is the difference between 9.73 and 2.52?

Back

7.21

Front

Why is it important to align 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 decimals?

Back

A common mistake is not aligning the decimal points, which can lead to incorrect sums.

Front

How do you handle carrying over in decimal addition?

Back

If the sum of a column exceeds 9, carry over the extra value to the next column to the left.