Lesson 2-6 Making 10 to Add Mr. Baker 2 nd Grade

Today We Will Learn! Addition facts involving 9 can be changed to an equivalent fact with 10. Addition facts involving 8 can be changed to an equivalent fact with 10.

Vocabulary Review

You have learned how to use ten- frames to show numbers. Today you will use ten-frames to help you add numbers. How did making a 10 help you to add three numbers?

The Problem!! How can you use these ten- frames to show 9 plus 3?

How can you show 9? (put 9 counters on the first ten-frame) How can you show 3? (put 3 counters on the second ten-frame) You can make a full ten first by moving one counter from the second ten-frame to the first ten-frame. Now we have = 12 so = 12 Let’s try some more. Let’s Explore!!

Use the tens-frames to solve these plus plus plus 7 Use your work mat to record your answers. Let’s Explore!!

Learning Bridge! In this lesson, you will learn how to make a 10 to help you add. Let’s watch and learn! –CLICK HERECLICK HERE –(After learning bridge use guided practice page to continue lesson.)

Close In this lesson, you learned that in an addition fact with 9 you can make the 9 a 10 and make the other addend 1 less. The sums of these two facts will be the same. GREAT JOB!

Math Journal & Technology Draw a picture to show how you can make 10 to help you add On your I Pad go to the math folder and begin working on Cloud Math.