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 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 sum of 7.25 and 2.76?

Back

The sum is 10.01.

Front

What is the difference between 8.97 and 2.82?

Back

The difference is 6.15.

Front

What is the total of 42.07, 29.3, and 34.8?

Back

The total is 106.17.

Front

What is the combined weight of a dog weighing 16.27 pounds and another weighing 28.53 pounds?

Back

The combined weight is 44.8 pounds.

Front

How do you round a decimal to the nearest whole number?

Back

To round a decimal, look at the digit to the right of the decimal point. If it is 5 or greater, round up. If it is less than 5, round down.

Front

What is 0.5 + 0.25?

Back

The sum is 0.75.

Front

What is 1.5 - 0.75?

Back

The difference is 0.75.