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 find the difference between two decimal numbers?

Back

To find the difference, subtract the smaller decimal from the larger decimal.

Front

If a prediction is 1.254'' and the actual amount is 0.875'', how do you find the prediction error?

Back

Subtract the actual amount from the predicted amount: 1.254 - 0.875 = 0.379.''

Front

What is the total amount left after spending $2.15 and $6.58 from $20?

Back

Subtract the total spent from the initial amount: $20 - ($2.15 + $6.58) = $11.27.

Front

How do you calculate the total distance run in a relay race?

Back

Add the distances run by each participant together.

Front

What is the sum of 10.9 hours, 8.6 hours, and 12.4 hours?

Back

Add the hours together: 10.9 + 8.6 + 12.4 = 31.9 hours.

Front

How do you calculate the remaining balance in a bank account after a withdrawal?

Back

Subtract the amount withdrawn from the initial balance.