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 difference between two decimal numbers?

Back

The difference is the result of subtracting one decimal number from another.

Front

What is the sum of two decimal numbers?

Back

The sum is the result of adding two decimal numbers together.

Front

Example: What is 42.07 + 29.3 + 34.8?

Back

The total is 106.17.

Front

Example: What is 89.26 - 32.79?

Back

The amount left is 56.47.

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 combined weight of two objects if one weighs 16.27 pounds and the other weighs 28.53 pounds?

Back

The combined weight is 44.8 pounds.

Front

How do you find the difference between two distances measured in meters?

Back

Subtract the smaller distance from the larger distance to find the difference.