Significant Figures in Multiplication and Division

Question 1

Five significant figures will be present in the volume of a sphere if the radius of the sphere is 3.016 m. (Value of pi is 3.14)
True or False?

Answer 1

False

Question 2

Perform the following calculation and give the answer with the correct number of significant figures: 10.888×44.

Answer 2

480

Question 3

Calculate 152.8/2.0 with the correct number of significant figures.

Answer 3

76

Question 4

Calculate the following using proper number of significant figures:

0.0702÷1.35

Answer 4

0.0520

Question 5

A sample of nickel weighs 7.5425 g and has a density of 8.8 g/cm3. What is the volume with the correct number of significant figures?

Answer 5

0.86cm3

Question 6

A is 3600 m away from B. Jack spent 720.0 s running from A to B. What is Jack’s average speed? (Average speed = Distance/Time)

Answer 6

5

Question 7

Assume an object A with mass of 66.789 g and a volume of 10.1 mL. What is its density?

Answer 7

6.61

Question 8

Consider a block G with mass of 49.231 g and a volume of 23.8 mL. What is its density? (Density = mass ÷ volume)

___ g/mL

Answer 8

2.07

Question 9

The dimensions of a box are 4.5 cm wide by 5.750 cm long by 1.50 cm tall. What is the volume of the box, taking significant figures into account?

______ cm3

Answer 9

39

Question 10

The density of liquid Z is 0.9237 g/mL. A student masses a cup with a sample of liquid Z in it and finds the mass to be 50.7 g. The mass of the cup alone is 15.92 g. What is the volume of liquid Z in the cup? (Volume = mass ÷ density)

___ mL (Round your answer to 3 significant figures)

Answer 10

37.7

Question 11

The dimensions of a water tank are 1.0 m wide by 3.25 m long by 1.50 m tall. What is the volume of the water tank, taking significant figures into account?

___ m3

Answer 11

4.9

Question 12

The density of liquid A is 1.0240 g/mL. A cup with a sample of liquid A in it weighs to be 45.66 g. The mass of the cup alone is 12.32 g. What is the volume of liquid A in the cup? ___ mL

Answer 12

32.56

Question 13

The dimensions of a cuboid shape cupboard are 1.31 m wide by 0.9 m long by 1.70 m tall. What is the volume of the cupboard, taking significant figures into account?

___ m3

Answer 13

2

Question 14

Assume an object A with mass of 36.240 g and its density is 5.40 g/mL. What is its volume?

Answer 14

6.71

Question 15

Perform the following calculation and give the answer with the correct number of significant figures: 10.888×44.

Answer 15

480

Question 16

The product of 173.06×0.21 should be reported as _____ by using proper number of significant figures.

Answer 16

36

Question 17

What is 4.07 cm×2.3 cm, rounded to the correct number of significant figures?

Answer 17

9.4cm2

Question 18

What is 155.4 g/8.70 mL, rounded to the correct number of significant figures?

Answer 18

17.9g/mL

Question 19

The mass of a solid substance is 21.1164 g. If the volume of the solid substance is 19.9 cm3, calculate the density of the substance with the correct number of significant digits.

Answer 19

1.06g/cm3

Question 20

If we divide a number having 5 significant digits by another number having 3 significant digits, then the result will have 5 significant digits.

True or False?

Answer 20

False

Question 21

The number of significant figures in the expression 46.00745.0 is two.
True or False?

Answer 21

False

Question 22

After rounding off correctly, the product of 3.000 cm×30.0 cm is:

Answer 22

9.00x10^1cm2

Question 23

The principle involved in working with ____
and _____
is that the answer should be rounded to the same number of significant figures as the measurement with the lowest number of significant figures.

Answer 23

Multiplication

Division

Question 24

Calculate the number of significant figures up to which (28.2−21.2)(1.79×106)1.62 will be expressed.

Answer 24

2

Question 25

Complete the sentence using the words units, values or quantities. The ___ are multiplied together just as the numbers in multiplication and division problems.

Answer 25

units

Question 26

The number of significant figures in the product of 4.0007×4.0 is 2. True or False?

Answer 26

True

Question 27

The answer for a multiplication or division operation must have the same number of significant figures as the factor with the least number of significant figures. True or False?

Answer 27

True

Question 28

In the following expression 0.012180x0236, the answer should be reported in three significant figures.

Answer 28

True