Lesson: Adding by Breaking Apart Tens and Ones Mathematics • 1st Grade

In this lesson, we will learn how to add a 2-digit number to a 2-digit number by breaking the numbers apart and adding ones then tens.

Sample Question Videos

Q1:

We can break apart numbers into tens and ones to add.

Add the tens.

What is ?

Add the ones.

What is ?

Add the sums to find .

Q2:

Break apart the numbers into tens and ones to add.

Q3:

Use the picture to help you complete the number sentence: .

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