1. Lesson 10-1: Adding Groups of 10
How is adding groups of 10 similar to adding numbers less than 10?
If __ tens + __ tens = __ tens
Then ___ + ___ = ___

2. Lesson 10-2: Adding Tens on a Hundred Chart
How can you add tens on a hundred chart?
I can add on a hundred chart by starting at ___ and moving DOWN ___ tens. Ex: …

3. Lesson 10-3: Adding Tens to Two-Digit Numbers
How do you add tens to a two digit number?
If I add __ + __, the ones digit stays the same. The tens digit changes: __ + __ = __

4. Lesson 10-4: Using Mental Math to Add tens
How do you use mental math to add tens?
I think of … Then I think of…
This give me the sum of ___.

5. Lesson 10-5: Adding a Two-Digit Number
How can you REGROUP to add ones?
First, I show the addends:
Then, I count the ones:
Next, I regroup if needed:
Finally, I show the sum: