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Adding multi-digit numbers
You know how to add multi-digit numbers from the 3rd grade. Now we will give you even more practice (and tackle even larger numbers)! We'll dive into something called "regrouping" or "carrying" - it's a nifty little trick that makes adding multi-digit numbers much easier! Common Core Standard: 4.NBT.B.4
Our goal is to understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones. We'll use the bead counter to help!
We're going to learn all about carrying when adding a 3 digit number. Join us!
Sometimes when we add, we carry our tens to the next column. Let's watch this so we can understand why it works.
In the old days 'regrouping' was known as "carrying." It's the same idea now as then: moving the tens (or hundreds or thousands) over to the next column.