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 value of 6.8 - 2.93?

Back

3.87

Front

What is the result of 50 - 8.32?

Back

41.68

Front

Calculate 10.09 - 4.35.

Back

5.74

Front

What is 86.04 + 4.04?

Back

90.08

Front

Find the sum of 20.529 and 19.48.

Back

40.009

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, which can lead to incorrect results.

Front

How do you round a decimal to the nearest hundredth?

Back

To round a decimal to the nearest hundredth, look at the digit in the thousandths place. If it is 5 or greater, round up the hundredths place by one; if it is less than 5, keep the hundredths place the same.