## Regrouping 100s & 10s to Subtract

You may hear your child and her teacher talk about Place Value Disks. When learning place value, addition, and subtraction, place value disks are a great tool to tie together your child’s understanding before using the standard algorithm. They are especially helpful when regrouping, that is, changing one unit to another unit. Watch this tool in action on a place value chart. Forty-three minus sixteen.

## Foundation of Multiplication and Division

Your child sets the foundation for understanding multiplication and division in second grade. The first layer in building this foundation is a concrete understanding. He will use objects as counters to create equal groups. Ask your child: Can you make groups of three? Yes!

## Place Value Chart: Modeling 2-digit & 3-digit Addition and Subtraction

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. Here’s how you can help. One-hundred seventy six plus forty-five.

## Number Forms

Part of using base-ten numbers correctly is understanding how to express the same number in different forms.

Let’s use: 273. This is the base-ten numeral written in standard form. Next, let’s express 273 in unit form. To help, your child may label with a place value chart. Hundreds column, tens column, ones column.