Order Of Operations

There are 4 operations:

1st. Brackets

2nd. Exponents

3rd. Divide or Multiply in order from left to right.

4th. Addition or Subtraction in order from left to right.

(6.4+120)x1.25=156.4

What sign goes where? +, /
5.2 / 4 + 2.1= 3.4

1.3+2.1=3.4

Annie has been asked to calculate 1.7+6+2. She claims the answer is 3.85. Do you agree? Explain why or why not.

I don't agree because the answer i got was 9.7. I think she added it wrong. i calculated 1.7+6 and it equaled 7.7 then i added 2 and i got 9.7