1. grade 3-4 addition and subtraction

2. why ?

3. Thing about the strategies used to solve this problem
Thing about the strategies used to solve this problem. Is there any relation with estimating an answer to a problem ?

6. Share your thinking with your classmates!
Let’s see if we can find different ways to solve each problem.

10. Is there any other way you can think of how to solve this problem?

12. Problems....

16. Share with your classmates!
Check out! I am giving the answer to you....
What I want to know is how YOU would solve this problem
using subtraction...
Which equation you would write?

22. Copy of page 40, 43m and 44 from the book to do at home
Copy of page 40, 43m and 44 from the book to do at home. File: Grade 3 Unit 3 Add-subt.pdf or here