Question

i don’t really know how to do this and need help

Answer 1

Answer:

Explanation:

To round the number to 3 significant figures, look at the first 4 digits: 3545 which will round to 355. The number in 3 significant figures will be 3,550,000.

Answer 2

$\\ \sf\Rrightarrow 3545530$

$\\ \sf\Rrightarrow 354553$

$\\ \sf\Rrightarrow 35455$

$\\ \sf\Rrightarrow 3545$

$\\ \sf\Rrightarrow 355$