Significant Figures Flashcards
Significant Figures in a number consist of…
The known digits (figures) of a number plus one estimated digit (figure).
Is the 0 in 9.04 significant?
Yes
Is the 0 in 0.46 cm significant?
No
Is the 0 in 11.30 cm significant?
Yes
Are the 0s in 1600 ft significant?
No
How many significant figures does the following number have?
1.60 x 10^3 ft
3
How many significant figures does the following number have?
0.0420 cm
3
How many significant figures does the following number have?
5.320 in
4
How many significant figures does the following number have?
10 lb
1
How many significant figures does the following number have?
0.020 ml
2
How many significant figures does the following number have?
2403 ft
4
How many significant figures does the following number have?
80.5300 m
6
How many significant figures does the following number have?
200. g
3
How many significant figures does the following number have?
2.4 x 10^3 kg
2
Round 10.324578532743 to the nearest 10th.
10.3
Round 107.46 to the nearest 10th.
107.5
Round 33.51 to the nearest whole number.
34
Round 31.509 to the nearest whole number.
32
Round 32.509 to the nearest whole number.
32
Round the following to 3 significant figures:
3.478 m
3.48
Round the following to 3 significant figures:
4.8055 cm
4.81 cm
Round the following to 3 significant figures:
5.333 g
5.33 g
Round the following to 3 significant figures:
7.999 in
8.00 in
How many significant figures would the product of 0.031 and 1365?
2
What is the product of 2.1 cm and 3.24 cm to the correct number of significant figures?
6.8 cm^2
What is the product of 10.2 cm, 8.24 cm, and 1.8 cm to the correct number of significant figures?
150 cm^3
How many significant figures would the quotient of 528 and 0.14 contain?
2
Calculate 20.45/2.4 to the correct number of significant figures?
8.5
Add 42.56 g + 39.460 g + 4.1 g to the correct significant figures.
86.1 g
Calculate the sum of 211,420 and 11.456432 to the correct number of significant figures.
211,430
What is the average of 12.523 g, 12.497 g, and 12.515 g to the correct number of significant figures?
12.512 g
Give the number of significant figures in the following number:
402 m
3
Give the number of significant figures in the following number:
0.00420 g
3
Give the number of significant figures in the following number:
5.1 x 10^4 kg
2
Give the number of significant figures in the following number:
78,323.01 g
7
Give the number of significant figures in the following number:
34.20 lbs
4
Give the number of significant figures in the following number:
3200 liters
2
Give the number of significant figures in the following number:
0.48 m
2
Give the number of significant figures in the following number:
1.10 torr
3
Give the number of significant figures in the following number:
0.03 sec
1
Give the number of significant figures in the following number:
0.0300 ft
3
Give the number of significant figures in the following number:
1400.0 m
5
Give the number of significant figures in the following number:
760 mm Hg
2
Multiply the following, observing significant figure rules:
17 m x 324 m
5500 m^2
Multiply the following, observing significant figure rules:
0.005 in x 8888 in
40 in^2
Multiply the following, observing significant figure rules:
0.424 in x .090 in
.038 in^2
Multiply the following, observing significant figure rules:
1.7 mm x 4294 mm
7300 mm^2
Multiply the following, observing significant figure rules:
0.050 m x 102 m
5.1 m^2
Multiply the following, observing significant figure rules:
324000 cm x 12.00 cm
3,890,000 cm^2
Divide the following, observing significant figure rules:
23.4 m / 0.50 sec
47 m/sec
Divide the following, observing significant figure rules:
0.960 g / 1.51 moles
0.636 g/mol
Divide the following, observing significant figure rules:
12 miles / 3.20 hours
3.8 mi/h
Divide the following, observing significant figure rules:
1200 m / 12.12 sec
99 m/sec
Add the following, observing significant figure rules:
- 40 m
- 022 m
- 5 m
3.9 m
Add the following, observing significant figure rules:
- 45 g
- 44 g
- 9999 g
106.89 g
Add the following, observing significant figure rules:
- cm
- 14 cm
- 9 cm
111 cm
Subtract the following, observing significant figure rules:
- 306 m
- 22 m
41.09 m
Subtract the following, observing significant figure rules:
- 33 g
- 468 g
10.86 g
Subtract the following, observing significant figure rules:
- 1 cm
- 04 cm
172.1 cm
Work the following problem, observing significant figure rules:
Three determinations were made of the percentage of oxygen in mercuric oxide. The results were 7.40%, 7.43%, and 7.35%. What was the average percentage?
7.39%
Work the following problem, observing significant figure rules:
A rectangular solid measures 13.4 cm x 11.0 cm x 2.2 cm. Calculate the volume of the solid.
320 cm^3
Work the following problem, observing significant figure rules:
If the density of mercury is 13.6 g/ml, what is the mass in grams of 3426 ml of the liquid?
46600 g
Work the following problem, observing significant figure rules:
A copper cylinder, 12.0 cm in radius, is 44.0 cm long. If the density of copper is 8.90 g/cm^3, calculate the mass in grams of the cylinder. (Assume pi is 3.14)
1770 g
