7821-3462=
Strategies: 7821 7000-3000=4000
- 3462 = algerozem 800-400=400
4359 20-60=-40 = place value
1-2=-1
4000+400=4400
4400 - -60=4340
4340 - -1=4359
This is a number talk and somethings we do it in class in the morning. Basicly a number talk is were someone writes a equation and you all write as many strategies as you can. After a while you take turns writing strategies up on the board so if you didn't write a strategie that is on the board you can go and ask the person how to do it. So its basicly learning new strategies.
1 comment:
You have a lot of knowledge that you can share with the class. It is great to see you challenge yourself to find more and more ways of attacking problems.
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