Addition involves finding the total of two or more numbers or amounts. There are different things you can use to help you add. You can use number lines, place value charts and place value counters.

Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three-digit numbers together. When you do column addition, you lay out the numbers you are adding ...

You've purchased what you thought was your dream home, but after a few years, you've realized you need a little more space. What can you do? Before you call your real estate agent, consider building ...