Texas Integrated School has 15 classes and has 20 students per class.  They added five more classes, how many students will they have now?
The school has 15 x 20 = <T>multiply(15, 20)=300 students right now.
They have an additional 5 x 20 = <T>multiply(5, 20)=100 students after adding 5 more classes.
Therefore, Texas Integrated School will have a total of 300+100= <T>add(300, 100)=400 students.
