Final answer:
To find the number of students who ordered pizza, subtract the number of students who ordered chicken nuggets and salad from the total number of students which gives us 104 students.
Step-by-step explanation:
To find the number of students who ordered pizza on Monday, we need to subtract the number of students who ordered chicken nuggets and salad from the total number of students in the seventh grade.
Given that 6 students ordered chicken nuggets and 10 students ordered salad, we can calculate the number of students who ordered pizza using the equation:
Pizza Order = Total Students - Chicken Nuggets Orders - Salad Orders
Pizza Order = 120 - 6 - 10 = 104 students