Adding and Subtracting Decimals Word Problems

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

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 3.45, '3' is in the units place, '4' is in the tenths place, and '5' is in the hundredths place.

Front

How do you convert a fraction to a decimal?

Back

Front

What is the first step in solving a word problem involving decimals?

Back

The first step is to read the problem carefully and identify the key information and what is being asked.

Front

How do you represent a word problem mathematically?

Back

Translate the words into a mathematical expression or equation using numbers and operations that reflect the problem's context.

Front

What is the result of adding 0.75 and 0.25?

Back

0.75 + 0.25 = 1.00.

Front

If Matt's time is 26.03 seconds and Ryan is 0.45 seconds slower, how do you find Ryan's time?

Back

Subtract 0.45 from 26.03: 26.03 - 0.45 = 25.58 seconds.

Front

How do you find the difference in height between two people using decimals?

Back

Subtract the shorter height from the taller height. For example, Lacy's height (51.25 inches) - Gerald's height (46.65 inches) = 4.60 inches.