Calculations with Sig Figs

What is the correct answer according to sig fig rules:

.005612 x .40145 =

• .0022

• .00225

• .002252

• .002253

What is the correct answer according to sig fig rules:

13 + 26.45 + 22.198 =

• 61.648

• 61.65

• 61.64

• 62

What is the answer? 12.50 * 2.0

• 25

• 25.0

• 21

• 20

Solve the problem below, and choose the answer with the correct number of significant figures and the correct units.
28.00g  ÷  2.00mL  =  ???

• 14.0g
• 14.0mL
• 14.0
• 14.0g/mL

Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.

• 1.0 m²
• 1.1 m²
• 1.0947 m²
• 1.09 m²