Add and Subtract Decimals Word Problems

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 importance of place value in decimals?

Back

Place value in decimals indicates the value of each digit based on its position relative to the decimal point. For example, in 4.56, 5 is in the tenths place and 6 is in the hundredths place.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator (top number) by the denominator (bottom number). For example, 1/4 = 0.25.

Front

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

Back

The term for the number being subtracted is called the 'subtrahend'.

Front

What is the term for the result of an addition problem?

Back

The result of an addition problem is called the 'sum'.

Front

What is the term for the result of a subtraction problem?

Back

The result of a subtraction problem is called the 'difference'.

Front

If Lacy is 51.25 inches tall and Gerald is 46.65 inches tall, how do you find out how much taller Lacy is than Gerald?

Back

Subtract Gerald's height from Lacy's height: 51.25 - 46.65 = 4.60 inches.

Front

If Karl earned $142.37 and paid $38.81, how do you find out how much he has left?

Back

Subtract the bill from his earnings: 142.37 - 38.81 = 103.56, which is approximately $100.00.