Adding and Subtracting Decimals Word Problems

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate 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 importance of place value in decimals?

Back

Place value determines the value of each digit in a decimal number, affecting the outcome of addition and subtraction.

Front

How do you convert a word problem into a mathematical equation?

Back

Identify the key information and operations in the problem, then translate them into numbers and symbols to form an equation.

Front

What is the total amount if you spend $2.15 and $6.58 from $20?

Back

$20 - ($2.15 + $6.58) = $11.27.

Front

If you buy items for $47.82 and $13.36 and pay with $100, how do you find the change?

Back

$100 - ($47.82 + $13.36) = $38.82.

Front

How do you find the missing value in a total?

Back

Subtract the known value from the total to find the missing value.

Front

What is the total rainfall if one city received 3.74 inches and another received 9.8 inches?

Back

3.74 + 9.8 = 13.54 inches.

Front

If a race is 22.01 kilometers and one runner ran 9.41 kilometers, how do you find the distance the other runner ran?

Back

22.01 - 9.41 = 12.6 kilometers.