Let’s make sure we understand both methods.
Two-digit addition without regrouping: This is when you add two numbers together and don’t need to carry any value over to the next column.
For example, let’s say you have the problem:
25
+ 34
----Here’s how you solve it:
a. First, you add the numbers in the ones place (the right column). That’s 5 (from 25) plus 4 (from 34). What does that equal? It’s 9!
b. Then you add the numbers in the tens place (the left column). That’s 2 (from 25) plus 3 (from 34). What does that equal? It’s 5!
c. So the answer is 59!
Two-digit addition with regrouping: This is when you add two numbers together and the sum is 10 or more, so you have to carry a value over to the next column.
For example, let’s say you have the problem:
27
+ 48
----Here’s how you solve it:
a. First, you add the numbers in the ones place (the right column). That’s 7 (from 27) plus 8 (from 48). What does that equal? It’s 15!
b. 15 is a two-digit number, so we have to regroup. We write down the 5 in the ones place, and carry the 1 (the tens place of 15) over to the tens column.
c. Then, you add the numbers in the tens place, including the carried number. That’s 1 (carried) plus 2 (from 27) plus 4 (from 48). What does that equal? It’s 7!
d. So the answer is 75!
For the worksheet, you just follow these steps for each problem. Whether you need to regroup or not depends on if the numbers you’re adding together in the ones or tens place make a number 10 or bigger. I hope this helps!
Printable 2 Digit Addition With Regrouping Worksheet
Answer Key
Printable 2 Digit Addition Without Regrouping Worksheet
Answer Key
