Subtracting Decimals

Front

What is subtracting decimals?

Back

Subtracting decimals involves finding the difference between two decimal numbers. It requires aligning the decimal points and performing the subtraction as with whole numbers.

Front

How do you subtract a negative decimal?

Back

When subtracting a negative decimal, it is equivalent to adding the positive value of that decimal. For example, 7.6 - (-6.5) becomes 7.6 + 6.5.

Front

What is the result of 7.6 - (-6.5)?

Back

14.1

Front

If Kelly has $20 and spends $2.15 and $6.58, how do you find out how much she has left?

Back

Subtract the total spent from the initial amount: $20 - ($2.15 + $6.58) = $20 - $8.73 = $11.27.

Front

What is the result of 4.16 - 9.043?

Back

-4.883

Front

How do you find out how much water your dog drank if the bowl was 0.75 full and is now 0.35 full?

Back

Subtract the current amount from the initial amount: 0.75 - 0.35 = 0.40.

Front

What is the result of 82.96 - 15.74?

Back

67.22

Front

What is the importance of aligning decimal points when subtracting decimals?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate subtraction.

Front

What is a common mistake when subtracting decimals?

Back

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

Front

How do you handle borrowing when subtracting decimals?

Back

Borrowing in decimal subtraction is similar to whole number subtraction. If a digit in the top number is smaller than the corresponding digit in the bottom number, you borrow from the next left digit.