Adding and subtracting decimals

Front

What does the digit in the hundredths place represent in a decimal number?

Back

The digit in the hundredths place represents the number of hundredths in the decimal, which is equivalent to the value divided by 100.

Front

How do you add decimal numbers?

Back

To add decimal numbers, align the decimal points and add each column starting from the right, carrying over if necessary.

Front

What is the result of 4.62 + 7.7?

Back

The result is 12.32.

Front

How do you subtract decimal numbers?

Back

To subtract decimal numbers, align the decimal points and subtract each column starting from the right, borrowing if necessary.

Front

What is 7.9 - 3.47?

Back

The result is 4.43.

Front

How do you find the total time traveled when given multiple time intervals?

Back

To find the total time traveled, add all the time intervals together.

Front

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

Back

The sum is 31.9 hours.

Front

If Kelly has $20 and spends $2.15 and $6.58, how do you calculate the remaining amount?

Back

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

Front

What is the importance of aligning decimal points when performing addition or subtraction?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, typically represented with a decimal point.