Adding and Subtracting Decimals

Front

What is the process of adding decimals?

Back

To add decimals, align the decimal points of the numbers, add the digits starting from the rightmost side, and carry over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the decimal points of the numbers, subtract the digits starting from the rightmost side, and borrow if necessary.

Front

What is the value of 21 + 4.09?

Back

25.09

Front

If the area of a room is 235.675 square feet and the closet is 10.45 square feet, how do you find the difference?

Back

Subtract the area of the closet from the area of the room: 235.675 - 10.45 = 225.225 square feet.

Front

What is Gina's score for the balance beam if her total score is 16.75 and she scored 9.3 on the vault?

Back

To find the score for the balance beam, subtract the vault score from the total score: 16.75 - 9.3 = 7.45.

Front

What is the result of 94 - 4.8?

Back

89.2

Front

Calculate 32.15 + 24.15.

Back

The result is 56.30.

Front

Why is it important to align decimal points when adding or subtracting decimals?

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, which can lead to incorrect results.

Front

How do you handle carrying over when adding decimals?

Back

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