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Significant digits practice

Total questions: 23

Worksheet time: 35mins

Name
Class
Date
1.

In a measurement, significant figure consist of the digits known ___________.

a)

only

b)

plus one estimated digit

c)

plus two estimated digits

2.

How do we measure B with 3 significant digits?

a)

9.2

b)

9.20

c)

9.25

d)

9.00

3.

How would you record measurement A?

a)

7.8

b)

7.82

c)

7.825

d)

7.90

4.

How many significant digits would you report in this measurement?

a)

1

b)

2

c)

3

d)

4

5.

What is the volume shown in this graduated cyclinder?

a)

4.30 mL

b)

4.35 mL

c)

4.4 mL

d)

4.40 mL

6.

What is the volume shown in this graduated cyclinder?

a)

24.0 mL

b)

24 mL

c)

23.7 mL

d)

23 mL

7.

What is the volume shown in this graduated cyclinder?

a)

56 mL

b)

60 mL

c)

57.0 mL

d)

56.0 mL

8.

How many sig figs are found in 0.020 mL?

a)

1

b)

2

c)

3

d)

4

9.

How many sig figs are found in 2000 miles?

a)

1

b)

2

c)

3

d)

4

10.

Significant digits are used in chemistry to show the _____________ of the measuring tool.

a)

units

b)

purpose

c)

precision

11.
How many significant digits are there in "6605"?
a)
1
b)
2
c)
3
d)
4
12.
How many significant digits are there in "0.0805"?
a)
2
b)
3
c)
4
d)
5
13.
How many significant digits are there in "8003"?
a)
1
b)
2
c)
3
d)
4
14.
How many significant digits are there in "0.94"?
a)
1
b)
2
c)
3
d)
none
15.
There are __?__ significant digits in the number 2,000,000
a)
1
b)
2
c)
6
d)
7
16.
Round "0.265" to two significant digits.
a)
0.3
b)
0.27
c)
0.25
d)
0.2
17.
There are __?__ significant digits in the number 0.00076
a)
2
b)
4
c)
5
d)
6
18.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
19.
How would you write 0.0005 in scientific notation?
a)
50 x 105
b)

5 x 10-4

c)
5 x 103
d)
.5 x 103
20.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
21.
Scientific Notation is made up of two number parts. The first part should be a number between 1 and 100.
a)
True
b)
False
22.
Scientific Notation is made up of two number parts. The second part is a power of base 10.
a)
True
b)
False
23.
How do you write
8.317 x 106
in standard form?
a)
8, 371, 000
b)
83, 170, 000
c)
837, 100
d)
8, 317, 000

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