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

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 3.00 and 8.50?

Back

The sum is 11.50.

Front

What is the total cost if two movie tickets cost $3.00 each and popcorn and a slushy cost $8.50?

Back

The total cost is $14.50.

Front

What is 9.74 - 3.25?

Back

The answer is 6.49.

Front

If Ms. Hvozdik ran 12.3 miles and Ms. Chaney ran 4.9 miles, how much farther did Ms. Hvozdik run?

Back

Ms. Hvozdik ran 7.4 miles farther.

Front

What is 15.07 - 12.2?

Back

The answer is 2.87.

Front

What is the importance of aligning decimal points when adding or subtracting?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.

Front

What is the value of 0.5 + 0.25?

Back

The value is 0.75.