## Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from

Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).

## Related Lessons

Lesson 317

Join Mrs. Gray for a Mystery Math Mistake with D.C. He needs your help with his number bonds. We will be counting pictures with ten and some more to answer the question "how many?"

Lesson 318

Join Mrs. Gray for a Mystery Math Mistake with D.C. He needs help figuring out the missing parts in his number bonds. We represent numbers 11-19 in more than one way.

Lesson 316

Join Mrs. Gray for a Mystery Math Mistake with D.C. He needs help figuring out his number sentences to match ten frames. We are going to work on answering questions about how many are in groups of up to 20.

Lesson 307

Join Mrs. Gray for a subtraction word problem with Professor Barble! Next, get ready for some fun with using D.C. to find ALL the ways to break apart numbers.

Lesson 308

Join Mrs. Gray for a subtraction word problem with Professor Barble! We are going to have some fun doing word problems with 2 parts. We will learn together why labeling word problems help us to understand what the problem is asking.

Lesson 309

Join Mrs. Gray for a subtraction word problem with Porfessor Barble! We are going to take word problems to a new level with putting together and taking apart with both addends unknown. I wonder if you will be able to come up with ALL of the ways to solve!

Lesson 310

Join Mrs. Gray for a subtraction word problem with Porfessor Barble! Get ready to solve word problems more than one way. You will discover a pattern to help you understand word problems that can have multiple answers!

Lesson 312

Join Mrs. Gray for Mystery Math Mistake word problem. Get ready to have fun with 10 frames by playing Shake Those Discs and figuring how many more are needed to make 10.

Lesson 305

Join Mrs. Gray for a word problem with Professor Barble! Next, get ready to have some fun with pattern block designs as we match expressions to two parts.

Lesson 306

Join Mrs. Gray for a word problem with Professor Barble! Get your mallet ready to work with D.C. as we decompose and compose numbers with snap cube trains!

Lesson 303

Join Mrs. Gray for a word problem with Professor Barble! Next, get your mallet ready to decompose and compose numbers up to 5 with D.C.

Lesson 304

Join Mrs. Gray for a word problem with Professor Barble! Next, get ready to have some fun with pattern block designs as we match expressions to two parts.