Our class has been working on our subtracting strategies in Math! We have been solving problems using regrouping, thinking of addition, and the zero zapper. Explain to a family member how each of these strategies work. What other strategies do you use for subtraction? How are these strategies similar to addition?

Homework: 
Try solving the Difference Sudoku puzzle:
http://nrich.maths.org/5798

Reminder: 
- Our class is going to Telus Spark for a field trip on March 10! Please remember to return your signed Acknowledgment of Risk as soon as possible.