Either or both.
For multiplication or division, the only reasonable estimate is -2.
Multiplication is the inverse operation to division.
For addition or subtraction, 1 but for multiplication or division, 1.25
Division is the inverse operation to multiplication. Division by a number (other than zero) is the same as multiplication by its reciprocal.
"Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction." Therefore multiplication and division are equal.
Division is the inverse operation to multiplication (except by 0). Multiplication by a number is equivalent to division by its reciprocal.
An estimate is related to a number, not an arithmetic operation. Having said that, the estimate MUST take account of the context of the operations (+-*/).
For multiplication or division, 133.33... or 100*4/3
Division is the inverse operation to multiplication.
Division is the opposite of multiplication.
The result of multiplication is the "product", regardless of what the result of division is called.