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

What is the process of 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

Find the difference between 8.9 and 3.4.

Back

5.5

Front

Find the sum of 4.2, 1.3, and 2.7.

Back

8.2

Front

What is the result of 5.3 - 9.7?

Back

-4.4

Front

What is 4.9 - (-2.3)?

Back

7.2

Front

Find the sum of 0.6 and 1.9.

Back

2.5

Front

What does it mean to borrow in subtraction?

Back

Borrowing in subtraction means taking 1 from the next left column to make the current column's number larger when it is not sufficient to subtract.

Front

What does it mean to carry over in addition?

Back

Carrying over in addition means transferring 1 to the next left column when the sum of a column exceeds 9.

Front

How do you align decimals when adding or subtracting?

Back

Align the decimal points vertically so that the digits in each place value (ones, tenths, hundredths, etc.) are in the same column.