Significant Figures: Addition & Subtraction

How many sig figs in:

45 000 000 m

• 3

• 2

• 8

• 0

Round this number to have only 2 significant figures:

0.045 578

Round the following number to have only 4 significant figures:

4 556 789

10.5 cm + 15.33 cm + 13.335 cm =

• 39.165 cm

• 39.17 cm

• 39.1 cm

• 39.2 cm

35.55 mL - 5 mL

• 31 mL

• 30.55 mL

• 30.1 mL

• 30.550 mL

3.05 x 10⁷ + 4.566 x 10⁷ + 5.2 x 10⁶

• 8.136 x 10⁷

• 8.14 x 10⁷

• 8.1 x 10⁷

• 81 360 000

55.20 mL - 55.055 mL

Make sure to type the answer with the correct number of significant figures and to INCLUDE the unit.

Answer explanation

When adding or subtracting, round your answer to the same number of decimal places as the measurement with the fewest decimal places