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Significant Figures Practice

Total questions: 40

Worksheet time: 33mins

Name
Class
Date
1.
How many significant figures does the following number have?
0.00345
a)
6
b)
5
c)
3
d)
Ambiguous: 3,4,5, or 6
2.
How many significant figures does the following number have: 0.00204
a)
6
b)
4
c)
3
d)
2
3.
How many significant figures does the following number have: 100.00210
a)
7
b)
8
c)
10
d)
Ambiguous: 7 or 8
4.
Solve and give your answer with the correct number of significant figures
24.28 + 12.5
a)
3.687 x 101
b)
36.8
c)
37
d)
3.70x101
5.
Solve and give your answer with the correct number of significant figures
1421-34
a)
1.39x103
b)
1387
c)
1390
d)

1400

6.
Which of the following numbers have four significant figures?
a)
56.75 g
b)
40.01 g
c)
0.6000 g
d)
all of the choices
7.

Round 509.96 to 4 significant figures

a)

509.9

b)

509.0

c)

510.0

d)

510

8.
Calculate 12.47 m ÷ 3.2 s and give your answer with the correct number of significant figures.
a)
4 m/s
b)
3.9 m/s
c)
3.90 m/s
d)
3.897 m/s
9.
Calculate 7.987 m - 0.54 m and give your answer with the correct number of significant figures.
a)
7.45 m
b)
7.447 m
c)
7.4 m
d)
7.5 m
10.

What is 78.5 rounded to one significant figure?

a)

79

b)

78.5

c)

70

d)

80

11.

What is 0.658 rounded to 1 significant figure?

a)

0

b)

0.66

c)

0.7

d)

0.658

12.

What is 7.555 rounded to two significant figures?

a)

7.6

b)

7.5

c)

70

d)

76

e)

7.60

13.
Round 52689 to 3 significant figures.
a)
526
b)
527
c)
52600
d)
52700
14.
Round 0.00258954 to 4 significant figures.
a)
0.0025
b)
0.002589
c)
0.002580
d)
0.002590
15.
Round 1235 to 2 significant figures.
a)
12
b)
1200
c)
1200.
d)
1200.00
16.

Round the following value to one significant figure...


8291

a)

8000

b)

9000

c)

7000

d)

8300

17.

Round the following value to one significant figure...


8291

a)

8000

b)

9000

c)

7000

d)

8300

18.

What is 78.5 rounded to one significant figure?

a)

79

b)

78.5

c)

70

d)

80

19.

Round 509.96 to 4 significant figures

a)

509.9

b)

509.0

c)

510.0

d)

510

20.

What is 0.658 rounded to 1 significant figure?

a)

0

b)

0.66

c)

0.7

d)

0.658

e)

1

21.

Round 509.96 to 4 significant figures

a)

509.9

b)

509.0

c)

510.0

d)

510

22.

Round 0.010229 to four significant figures

a)

1022

b)

1023

c)

0.01023

d)

0.01022

23.

What is 375.6523 to four significant figures?

a)

375.0

b)

375.00

c)

375.7

d)

375.6

24.

Round 1047.78 to three significant figures.

a)

104

b)

105

c)

1050

d)

1050.00

25.

Round the following value to one significant figure...


15

a)

10

b)

20

c)

100

d)

2

26.

What is 7.555 rounded to two significant figures?

a)

7.6

b)

7.5

c)

70

d)

76

e)

7.60

27.

How many significant figures: 450 m

a)

3

b)

2

c)

1

d)

0

28.

What is the correct answer using significant figures?


1.4 g + 3.1907 g =

a)

4.5907

b)

4.591

c)

4.59

d)

4.6

e)

5

29.

What is the correct answer according to significant figure rules?


9.003 m * 2.50 m =

a)

22.5075 m2

b)

22.508 m2

c)

22.51 m2

d)

22.5 m2

30.

What is the correct answer according to significant figure rules


1102.45 sec - 0.0057 sec

a)

1102.4443 sec

b)

1100 sec

c)

1102.44 sec

d)

1102.45 sec

31.

What is the correct answer according to significant figure rules


6.7899 min + 3.24 min - 1.00099 min =

a)

9.02891 min

b)

9.0289 min

c)

9.03 min

d)

9 min

32.

What is the correct answer according to significant figure rules


1.5 mL * 2.67 mL / 4 mL =

a)

1.00125 mL

b)

1.00 mL

c)

1.0 mL

d)

1 mL

33.

What is the correct answer according to significant figure rules


4.50 kg + 0.5550 kg =

a)

5.0550 kg

b)

5.055 kg

c)

5.05 kg

d)

5.06 kg

34.

Which of the following have NO zeros which are significant?

a)

100

b)

100.

c)

10.00

d)

0.100

35.

In division and multiplication, the answer should have the same number of significant figures as the

a)

number in the calculation with the fewest significant figures.

b)

number in the calculation with the most significant figures.

c)

average number of significant figures in the calculation.

d)

total number of significant figures in the calculation.

36.
Calculate 5.50 cm + 5.50 cm and give your answer with the appropriate number of significant figures.
a)
11 cm
b)
11.0 cm
c)
11.00 cm
d)
11.000 cm
37.
How many significant figures will be in the answer to the following question:
7.62 x 6.98 x 3.2645
a)
1
b)
2
c)
3
d)
4
38.
Calculate 12.34 + 1.234 + 0.1234
a)
13.6974
b)
13.697
c)
13.70
d)
13.7
39.
Calculate 345.009 g - 23.009 g and give your answer with the appropriate number of significant figures.
a)
322.00 g
b)
322 g
c)
322.000 g
d)
322
40.

What is the correct answer for: 20.2 cm ÷ 7.41 s

a)

2.726045884

b)

2.72604

c)

2.73

d)

2.7

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