2 digit by 2 digit addition is a mathematical operation that involves two numbers with two digits each. The result of the addition will be a number with three or four digits. It involves regrouping, carrying and borrowing numbers.
2 Digit by 2 Digit Addition
Regrouping: The process of exchanging units in a number for more tens or hundreds. Carrying: A process where the number of tens or hundreds from one column is added to the next column. Borrowing: The process of exchanging units from one column to another column in order to subtract.
2 digit by 2 digit addition has been around for centuries. The ancient Egyptians used this type of addition in their math calculations. The most common use of 2 digit by 2 digit addition is in everyday banking transactions!
Work together in pairs: Describe how you felt when you solved the 2 digit by 2 digit addition problems. Explain what strategies you used and why.
Work together in pairs: What was the most difficult part about solving 2 digit by 2 digit addition problems?
Brain break: Draw a picture of a robot that is a firefighter, and it's riding a unicycle!
Add the numbers in the ones column Carry any 10's Add the numbers in the 10s column.
Adding 2 digit numbers