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

What is the process for subtracting 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 0.1 in fraction form?

Back

0.1 in fraction form is 1/10.

Front

What is the combined weight of 23.7 pounds and 6.912 pounds?

Back

30.612 pounds.

Front

If Beth worked 33.25 hours last week and 23.75 this week, how many total hours did she work?

Back

57 hours.

Front

What is 45.09 + 2.005?

Back

47.095.

Front

What is 43.03 - 12.82?

Back

30.21.

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 term for the number that is being subtracted in a subtraction problem?

Back

The term is called the 'subtrahend.'