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UNIT 3
CHAPTER 9
Lesson 9-1
 
 
 
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CHAPTER 9 ADDITION STRATEGIES
Lesson 9-1 Count On 1 or 2
 
 

 
Use the number line to add.

Count on 1 or 2.





6.


7.
8.
9.
10.
11.
12.
13.
14.

15.
16.
17.
18.
19.
20.

  
Critical Thinking
  
Draw a picture to solve.
21.4  are on the wall. Draw 2 more.
How many  are on the wall now?
_______  



  
Your child used a number line to count on to add.
Activity:  Say a number from 5 to 9. Ask your child to count on to add 1 or 2.

 

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