Add and Subtract Decimals

Front

What is the sum of 6.1 and 1.9?

Back

The sum of 6.1 and 1.9 is 8.0.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

What is the sum of 17.23 and 12.46?

Back

The sum of 17.23 and 12.46 is 29.69.

Front

What is the difference between 16.871 and 4.602?

Back

The difference between 16.871 and 4.602 is 12.269.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the difference between 9.8 and 8.2?

Back

The difference between 9.8 and 8.2 is 1.6.

Front

What is the sum of 12.3 and 1.1?

Back

The sum of 12.3 and 1.1 is 13.4.

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 decimals?

Back

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

Front

What is the place value of the digit 2 in the number 17.23?

Back

The place value of the digit 2 in 17.23 is in the hundredths place.