Macmillan Logo
 
UNIT 7
CHAPTER 27
Lesson 27-1
 
 
 
Go to page
Table of Contents
 
   
 
 
Close the book
 
CHAPTER 27 ADDITION AND SUBTRACTION TO 20
Lesson 27-1 HANDS ON/ALGEBRA: Patterns with 10
 
 

  
Patterns with 10
  
Name ___________________________

 Number patterns can help you add.

Show 10. Show 3 more. What is the sum?




Patterns with 10



 Add. Look for a pattern. Use  and .

1.



2.

3.

4.

5.

6.

7.

8.

9.

10.

11. Look at Exercises 1–5.
What pattern do you see?


 

McGraw-Hill Logo
  A Division of The McGraw-Hill Companies
Copyright © The McGraw-Hill Companies, Inc. All rights reserved.