Learn to regroup but be careful the directions are not very clear. Read this first.
For addition- Drag the largest number to the ones place in the answer. Then drag enough DOTS to the ones place in the answer to make 10. Then drag the number ten from the ones place to the tens place in the answer. Go back to the number left in the ones part of the problem and drag it down to the now empty ones place. Hopefully, that will help you. Regroup now.
