Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part.

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 3.74 and 9.8?

Back

The sum is 13.54.

Front

What is the difference between 8.4 and 3.03?

Back

The difference is 5.37.

Front

How do you find the difference between two decimal numbers?

Back

Subtract the smaller number from the larger number, ensuring the decimal points are aligned.

Front

What is the total amount spent if tickets cost $3.00 each, popcorn and a slushy cost $8.50, and nachos cost $12.00?

Back

The total amount spent is $26.50.

Front

What is the result of 6.7 - 2.33?

Back

The result is 4.37.

Front

How do you compare two decimal numbers?

Back

To compare decimals, look at the digits from left to right, starting with the highest place value.

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.