human
Miss Davis gave 15 popsicle sticks to each of the 10 groups in her class. How many sticks does she have left if she had 170 popsicle sticks?
assistant
How many popsicle sticks did Miss Davis give to the 10 groups in her class? ** Miss Davis gave a total of 15 x 10 = <<15*10=150>>150 popsicle sticks to the 10 groups in her class.
How many sticks does Miss Davis have left? ** So, she is left with 170 - 150 = <<170-150=20>>20 sticks.
#### 20