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Curipod generated lesson: "addition with 3-digit numbers". #1-4

1. Word cloud
120 seconds
What is the answer to 438 + 250?
2. Slide
60 seconds
Start by adding the ones column. This means adding the digits in the ones column from both numbers. Next, add the tens column. This means adding the digits in the tens column from both numbers. Finally, add the hundreds column. This means adding the digits in the hundreds column from both numbers.
3. Slide
60 seconds
Place Value: the value of a digit based on its position in a number Regrouping: the process of exchanging or combining digits to make calculations easier Carrying: the process of adding a number to the next column when the sum of two digits is greater than 9
Concepts:
4. Poll
60 seconds
What is the best way to solve 3-digit addition problems?
• Using a calculator
• Writing down the steps on paper
• Using a whiteboard
5. Slide
60 seconds
The quickest way to add two 3-digit numbers is to use the vertical method. The first use of 3-digit addition was in ancient Egypt. The ancient Babylonians used a base-60 numerical system for addition and subtraction of 3-digit numbers.
Did you know?
6. Open question
300 seconds
What strategies can you use when adding 3-digit numbers together?
7. Open question
300 seconds
How can you write down a 3-digit addition problem in a way that makes it easier to solve?
8. Open question
300 seconds
What do you think is the most difficult part of adding 3-digit numbers?
9. Open question
300 seconds
What did you learn about addition with 3-digit numbers that you didn't know before?