Becoming comfortable with two-digit and three-digit numbers is an important skill in second grade. Your child will master addition and subtraction problems within one-thousand. But, how your child learns to understand addition and subtraction is very important. If you look closely, a place value chart is a helpful tool to use before your child uses the standard algorithm. The place value chart teaches your child why the standard algorithm works. How powerful!

operations addition and subtraction number lesson Grade 3 multimedia (i.e video/audio) 3.b2.4