Add and Subtract 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

What is the value of 9.73 - 2.52?

Back

7.21

Front

What is the value of 7.9 + 18.72?

Back

26.62

Front

What is the value of 5.66 + 4.25?

Back

9.91

Front

How do you find the difference between two decimal numbers?

Back

Subtract the smaller number from the larger number.

Front

What is the total cost if Gunnar buys a notebook for $2.45, a package of pencils for $3.79, and an eraser for $1.55?

Back

$7.79

Front

What is the difference between the lengths of the trails at Springfield Park (13.09 miles) and Lakewood Park (9.84 miles)?

Back

3.25 miles

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.