Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

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 answer directly below the other decimal points.

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 answer directly below the other decimal points.

Front

What is the difference between 9.28 and 0.54?

Back

8.74

Front

What is the sum of 10.9, 8.6, and 12.4?

Back

31.9 hours

Front

What is the difference between 435.2 and 24.55?

Back

410.65

Front

Which addition equation equals 7.29?

Back

4.18 + 3.11

Front

If Kelly has $20 and spends $2.15 and $6.58, how much does she have left?

Back

$11.27

Front

What is the first step in adding decimals?

Back

Align the numbers by the decimal point.

Front

What do you do if a decimal has different numbers of digits after the decimal point?

Back

Add zeros to the end of the shorter decimal to make them the same length before adding.