Chapter 3 Place Value Lesson 23

What do you notice about the addends in this addition fact?

What do you notice about the addends in this addition fact?

Now it's your turn to identify some double addition facts

How many fingers are on one hand?

How many fingers are on two hands?

How many tally marks is on the slide?

1. 50
2. 59
3. 51
4. 57
5. 58
6. 52
7. 55
8. 53
9. 54
10. 56

How many tens are in the expanded form of 49?

How many ones are in the expanded form of 49?

What is the most efficient way to represent the 4?

How many ones are needed to represent the 9?

What is expanded form?