Sig Fig Calculations

What is the correct answer according to sig fig rules:

13 + 26.45 + 22.198 =

• 61.648

• 61.65

• 61.64

• 62

Calculate 345.009 g - 23.009 g and give your answer with the appropriate number of significant figures.

• 322.00 g
• 322 g
• 322.000 g
• 322

5.40 x 7.90

• 42.66

• 42.7

• 43

• 40

2.1/5.1

• 0.4118

• 0.412

• 0.41

• 0.40

0.9/2.3

• 0.391

• 0.39

• 0.40

• 0.4