Why do you need to insert parentheses in math number model sentences?

Answer 1

You have to insert parentheses in math number sentences because they are first in the order of operation:

Parentheses Exponents Multiply Divide Add Subtract

Answer 2

Parentheses are used in math number models to indicate the order in which mathematical operations should be performed. They help clarify the intended meaning of the equation and ensure that calculations are done correctly according to the rules of arithmetic.