Calculations with Sig Fig

How should the problems shown below be rounded?

45.064 m - 25.34 m =

• two decimal places

• three decimal places

• four significant figures

• five significant figurse

• zero decimal places

• one decimal place

• two sig figs

• four sig figs

• three sig figs

• 3 decimal places

• 2 decimal places

• 2 sig figs

• 1 sig fig

• 3 sig figs

• 0.5 g/mL

• 0.50 g/mL

• 0.500 g/mL

• 7.5 g

• 105.492

• 105.49

• 105.4

• 105.5

• 105

• 29.74125 m³

• 29.74 m³

• 28 m³

• 30 m³

• 30. m³

• 2 decimal places

• 1 decimal place

• 4 sig figs

• 1 sig fig

• 3 sig figs

Calculate and round correctly

12.25 + 33 + 8.976

• 128.9

• 129

• 130

• 100

• 128.904