Follow the steps to see if the puzzle works.
§ Start with 60 and divide by 2.
§ Add your telephone number.
§ Subtract 25.
§ Multiply by 3.
§ Subtract 15.
§ Multiply by 2
§ Divide by 6.
The remaining digits should be your telephone number. Why does this work? What properties of addition & multiplication is this problem utilizing?
A puzzle is solved usng properties of addition and mutiplication.