express the answer in scientific notation with the correct number of significant figures

Question

(8.86+1.0*10^-3) / 3.610*10^-3

2454.57???

please help

Answer 1

3,o00032

Answer 2

please explain that

Answer 3

Goodness. The numberator reduceds to 8.86, you cannot add .001 to that, because the thousandths position in 8.86 is not signficant. Then dividing 8.86 by 3.610E-3 does not make more than three signficant digits (the numerator is only three). Ans: 2.45E3

Answer 4

thankyou