Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
When adding and subtracting decimals using 3-digit numbers, what is the most important step to remember?
When adding and subtracting decimals using 3-digit numbers, what is the most important step to remember?
- Align the decimal points before performing the operation (correct)
- Always add a zero after the decimal point to make the numbers have the same length
- Round the decimals to the nearest whole number before adding or subtracting
- Ignore the decimal points and perform the operation as if they were whole numbers
When adding and subtracting decimals, which of the following is a common mistake to avoid?
When adding and subtracting decimals, which of the following is a common mistake to avoid?
- Forgetting to carry over when adding
- Treating the decimals as whole numbers (correct)
- Rounding both numbers to the nearest whole number before performing the operation
- Ignoring the position of the decimal point
What is a helpful strategy when adding and subtracting decimals using 3-digit numbers?
What is a helpful strategy when adding and subtracting decimals using 3-digit numbers?
- Always rounding up the decimals to the nearest whole number
- Using place value understanding to align the decimals (correct)
- Ignoring the decimal points and focusing on the whole numbers
- Adding or subtracting the whole numbers first, then dealing with the decimals
