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 55.78 and 4.6?

Back

The sum is 60.38.

Front

If a family travels for 10.9 hours, 8.6 hours, and 12.4 hours, what is the total travel time?

Back

The total travel time is 31.9 hours.

Front

What is 94 minus 4.8?

Back

The result is 89.2.

Front

How do you calculate the remaining amount after spending from a total?

Back

Subtract the total amount spent from the initial total to find the remaining amount.

Front

What is 7.9 minus 3.47?

Back

The result is 4.43.

Front

If Kelly has $20 and spends $2.15 and $6.58, how much does she have left?

Back

Kelly has $11.27 left.

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 or subtracting decimals?

Back

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