Adding and Subtracting Decimals

Front

What is the process for 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 for 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 the digit in the hundredths place in the number 263.709?

Back

The digit in the hundredths place is 0.

Front

What is the value of the digit in the tenths place in the number 0.7129?

Back

The digit in the tenths place is 7.

Front

How do you find the difference between two decimal numbers?

Back

To find the difference, subtract the smaller number from the larger number.

Front

What is the sum of 1.70 and 4.65?

Back

The sum of 1.70 and 4.65 is 6.35.

Front

What is the importance of aligning decimal points when performing addition or subtraction?

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 sums or differences.

Front

How do you round a decimal to the nearest whole number?

Back

To round a decimal to the nearest whole number, look at the digit in the tenths place: if it's 5 or greater, round up; if it's less than 5, round down.

Front

What is the difference between 39.3 and 17.6?

Back

The difference is 21.7.