If you can add two 3-digit numbers, then you can use the same method to add 4-digit numbers together. Just remember to add on the number that you have regrouped. What is 4214 + 3936?

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Adding with regrouping If the two numbers in a place value column add up to ten or more, you must regroup. This means breaking a number up into thousands, hundreds and tens to help with the addition.

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