Aim: How do we recognize the identity and inverse properties?
Homework Questions:
Cookies and brownies cost $1.50 each. In order to find the cost of 2 cookies and 3 brownies Lorena added 2 + 3 and multiplied the sum by $1.50. Zachary multiplied $1.50 by 2 and the $1.50 by 3 and added the products. Explain why Lorena and Zachary both arrived at the correct cost of the cookies and brownies.
Fill in the blank and state the property.
1) 7(4 + ___) = 7(4) Property:_________________
2) ___ x = x Property: ________________
3) ( __) (8 + 2) = (8 + 2)(9) Property: ________________
4) 2 * ___ = 1