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. 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 39.3 and 17.6?

Back

21.7

Front

What is 80.93 - 68?

Back

12.93

Front

What is the sum of 32.15 and 24.15?

Back

56.30

Front

What is 55.78 + 4.6?

Back

60.38

Front

What is 9.43 - 3.34?

Back

6.09

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 place value of the digit 5 in the number 45.67?

Back

The place value of the digit 5 in 45.67 is in the tenths place.