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 94 - 4.8?

Back

89.2

Front

What is the sum of 55.78 and 4.6?

Back

60.38

Front

How do you convert a whole number to a decimal?

Back

To convert a whole number to a decimal, add a decimal point followed by zeros (e.g., 5 becomes 5.0).

Front

What is the value of 21 + 4.09?

Back

25.09

Front

What is the result of 2 - 0.43?

Back

1.57

Front

How do you round a decimal to the nearest hundredth?

Back

To round a decimal to the nearest hundredth, look at the third decimal place; if it's 5 or more, round up the second decimal place by one.

Front

What is the value of 2.98 + 5.3?

Back

8.28

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.