Significant Figures (Simplified) Practice Problems

Underline the non-significant zeros in each of the following measurements. If all zeros are significant, write none.

A. 108 600 L

B. 4.08×10⁴ kg 

C. 20.00 g

D. 351.06 K

E. 0.000 040 m

Choose the pairs that consist of measurements with different numbers of significant figures.

(i) 4.52×10⁴ km and 6.83×10⁶ km

(ii) 2.60×10⁵ L and 260 000 L

(iii) 740.0°C and 704°C

(iv) 0.00 084 g and 8.4×10⁴ g

Determine the exact number(s) from the following: 

i. 3 silver spoons

ii. 3 grams of silver

iii. 5 blocks of silver

iv. 5 silver rings

Choose and encircle the exact number from the following: 500 grams of meat or 5 pieces of egg

Choose the inexact number from the following: 2 sets of utensils or 50 grams of spoons 

Identify the pairs of measurements that have different numbers of significant figures.

(i). 8.6×10^–3 m and 0.8600 m

(ii). 0.0045 mL and 4500 mL

(iii). 0.104 g and 0.00140 g

(iv). 0.0657 L and 60.57 L

Determine the measured number(s) from the following:

i. 2 soda cans

ii. 12 oz of soda 

iii. 1 sack of lawn fertilizer

iv. 20 lb net wt.

Determine if the following statement has an exact or inexact number: The nurse injected 1 ampoule of a certain solution.

Determine if the following statement has an exact or inexact number:

The veterinary clinic has recorded the mass of the dog as 29.0 kg.

Select the exact numbers from the following:

(a) the mass of a black ballpen

(b) the average height of buildings around the park

(c) the number of liters in a cubic feet of water

(d) the number of employee in an office

(e) the mass of a soda can

Express each number in three significant figures

a. 0.00038475

b. 2.9983345

c. 1.78239x10⁵

d. 89,289.35

The number with the most significant figures is _____.