Answer:
300.5
Explanation:
Firstly, you must remember PEMDAS. This formula shows what order to do which parts of the equation!
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
The parenthesis mean that we must do the two equations in them separately.
So, first do 3 x 10². Next, do 5 x 1/10. Finally, add the two products together!
3 x 10² = 300
5 x 1/10 = 0.5
300 + 0.5 = 300.5
:)