Significant Figures with Addition/Subtraction and Multiplying/Dividing

What is the correct answer according to sig fig rules:

12.5 mL + 20.05 mL + 2.69 mL

• 35 mL

• 35.2 mL

• 35.24 mL

• 35.240 mL

What is the correct answer according to sig fig rules:

3.35 + 1.4 + 3.65

• 8.9

• 8.22

• 8.43

• 8.4

What is the correct answer according to sig fig rules:

33g - 2.1g = ______

• 31.9 g

• 31 g

• 30.9 g

• 30 g

What is the correct answer according to sig fig rules:

1200 light years - 5 light years = ?

• 1195 light years

• 2000 light years

• 1000 light years

• 1200 light years

What is the correct answer according to sig fig rules:

5.4 g x 8.99 g

• 49 g

• 48.5 g

• 48.55 g

• 48.546 g

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:

100 / 2 =

• 50

• 50.

• 50.0

• 50.00

What is the correct answer according to sig fig rules:

923 g ÷ 20312 cm³

• 0.04 g/cm³

• 0.045 g/cm³

• 0.0454 g/cm³

• 0.05 g/cm³

Round 0.010229 to four sig figs

• 1022
• 1023
• 0.01023
• 0.01022

What is 78.5 rounded to one significant figure?

• 79
• 78.5
• 70
• 80