Adding with regrouping

Latifah is organizing a picnic for her friends and needs to make sure they all have enough from everything they need for it - plates, food, juices. Let's help her and work on some addition problems. In this video we will show you how to add together two digit and one digit numbers. If it’s more than nine, regroup to make a new ten and move it to the tens place. Make sure to write a one above the tens place so that you remember to add one more group of 10. And voila! Now, let's go!

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Standards addressed

CCSS.MATH.CONTENT.1.NBT.C.4

Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

Adding with regrouping

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Addition and Subtraction - 1st grade