5 Dice: Order of Operations App
9 The Mathematical World
For Grades: 3-5
Learning Goal 6
Symbols are used to signify which operations to perform on numbers. The most common are +, -, x, and ÷.
For Grades: 6-8
Learning Goal 4
The operations + and - are inverses of each other—one undoes what the other does; likewise x and ÷.