Question

1. (4.12 x 10^6) + (3.94 x 10^4) 6) (7

Explanation:

Step1: Rewrite numbers with same exponent

Rewrite $3.94\times 10^{4}$ as $0.0394\times 10^{6}$.

Step2: Add the coefficients

$(4.12 + 0.0394)\times10^{6}$.
$4.12+0.0394 = 4.1594$.
So the result is $4.1594\times 10^{6}$.

Answer:

$4.1594\times 10^{6}$