Adding and Subtracting 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.

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 value of 1.254 - 0.875?

Back

0.379

Front

Calculate 12.69 + 4.10.

Back

16.79

Front

What is 13.08 + 7.456?

Back

20.536

Front

What is 10.05 - 8.3?

Back

1.75

Front

What is 13.080 - 7.486?

Back

5.594

Front

Why is it important to line up decimal points when adding or subtracting?

Back

Lining up decimal points ensures that each digit is in the correct place value, which is essential for accurate calculations.

Front

What is the first step in solving a decimal addition problem?

Back

The first step is to align the numbers by their decimal points.