In this book, children progress to two-digit addition while learning the commutative property of addition- an important foundation for future math success.

Problems incorporate both horizontal and vertical form addition, which prepares children for practice with three and four-digit addition. Upon completion, your child will be ready for advanced arithmetic!

Topics Covered in this Book:

• Horizontal addition review
• Vertical form addition
• Two-digit plus two-digit addition to 198
• Early three- & four-digit addition
• Addition of three two-digit numbers
• Commutative property of addition
• Patterns & sequencing