Question

33.153g+3.2g+8.70g but with the allowed significant digits

Answer 1

Answer: 45.1 g

Step-by-step explanation:

33.153 g (5 significant figures)

3.2 g (2 significant figures)

8.70 g (3 significant figures)
When added together you get

45.053

but since the lowest amount of precesion we have is 2 sig values we round our answer to 2 sig values.

45.05

But because we have a 0 in the decimals we round it and because we have the trailing 5 we round up to 45.1g