Question

3kg 296 g + 5 kg + 326 g

Answer 1

If you are trying to simplify then you would have to combine like terms
3kgx296g+5kg+326g (there is no sign between 3kg and 296 so i am assuming that is multiplied)
add 3kg+5kg and get 8kg
add 296g+326g and get 622g
So the equation would be 8kg*622g

Hope this helped!! :D

Answer 2

the answer for your question in grams is 893326 g while in kg is 893.326 kg (hope it helps)