Question

(3.2x10^3) + (5.78 x 10^5) ?

Answer 1

Simple....

you have: $(3.2* 10^{3} )+(5.78* 10^{5} )$

Simplify....

$(3.2* 10^{3} )=3200$

and

$(5.78* 10^{5} )=578,000$

3,200+578,000=581,200

=581,200

Thus, your answer.