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 sum 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 difference directly below the other decimal points.

Front

What is the sum of 0.5 and 0.3?

Back

0.5 + 0.3 = 0.8

Front

What is the difference between 5.5 and 2.2?

Back

5.5 - 2.2 = 3.3

Front

If you buy a toy for $15.75 and pay with a $20 bill, how much change do you get?

Back

$20 - $15.75 = $4.25

Front

What is the sum of 12.99 and 7.01?

Back

12.99 + 7.01 = 20.00

Front

What is the difference between 10.0 and 3.5?

Back

10.0 - 3.5 = 6.5

Front

How do you round 2.67 to the nearest whole number?

Back

2.67 rounded to the nearest whole number is 3.

Front

What is the sum of 32.15 and 24.15?

Back

32.15 + 24.15 = 56.30