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Lesson: Adding Tens to Three-Digit Numbers Mathematics

In this lesson, we will learn how to model adding a multiple of ten to a three-digit number and investigate which digits in the number change.

Lesson Plan

Students will be able to

Q1:

Count in tens to find the sum.

Q2:

Look at how Natalie broke apart a number to help her add.

First, add the tens.

Then, add to find the total.

Q3:

Look at how Ethan broke apart a number to help him add.

First, add the tens: .

Then, add the tens to 204 to find .