Add and Subtract 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

What is the sum of 22.50 and 14.75?

Back

The sum is 37.25.

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 34 + 10.18?

Back

The answer is 44.18.

Front

If Jenna buys a candy for $2.74 and pays with a $10 bill, how much change does she get?

Back

She gets $7.26 in change.

Front

What is the difference between 7.2 and 4.3?

Back

The difference is 2.9.

Front

How do you find the difference between two decimal numbers?

Back

To find the difference, subtract the smaller number from the larger number, aligning the decimal points.

Front

What is the total length of three trails if they are 9.84 miles, 6.7 miles, and 13.09 miles?

Back

The total length is 29.63 miles.

Front

What is the difference between 13.09 miles and 9.84 miles?

Back

The difference is 3.25 miles.