Adding 2-digit numbers with regrouping

Always add the ones place first

Always add the ones place first

5 ones + 7 ones = 1 ten + 2 ones or ones1 tens Since you cannot put 12 ones, you must regroup by putting the 2 in the ones place and the 1 in the tens place.

Next, add the tens

Let’s try regrouping again!

ones. Add the ones first

tens. Now, add the tens

REMEMBER: ones You must add the ones place first. Regroup tens Add the tens place.

Your turn! ones. Add the ones. 5

Your turn! Regroup. 5 1 tens. Add the tens. 10