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25 Chem Conversion, SN, SigFigs

Total questions: 43

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

10 m = _____ mm

a)

10,000 mm

b)

100 mm

c)

1 mm

d)

1,000 mm

2.

987 mm = _____ cm

a)

98.7 cm

b)

9,870 cm

c)

9.87 cm

d)

0.987 cm

3.

4.5 m = _____ cm

a)

45 cm

b)

450 cm

c)

0.45 cm

d)

4,500 cm

4.

2.7 L = _____ mL

a)

0.27 mL

b)

270 mL

c)

2,700 mL

d)

27 mL

5.

8,400 mL = _____ L

a)

840 L

b)

84 L

c)

0.84 L

d)

8.4 L

6.

345 cm = _____ m

a)

3.45 m

b)

0.345 m

c)

34.5 m

d)

3,450 m

7.

18 kg = _____ g

a)

180 g

b)

1,800 g

c)

1.8 g

d)

18,000 g

8.

43,000 kg = _____ g

a)

43 g

b)

430 g

c)

4,300 g

d)

4.3 g

9.
Convert from meters to cm:  9 meters
a)
900 cm
b)
90 cm
c)
0.9 cm
d)
0.09 cm
10.
Convert 17 m to cm:
a)
0.17 cm
b)
0.017 cm
c)
1,700 cm
d)
170 cm
11.
Convert 300 meters to centimeters:
a)
3000 cm
b)
0.3 cm
c)
30,000 cm
d)
3 cn
12.

Reorder the following from the smallest measurement to the largest measurement.

a)

0.58 mm

b)

5.8 mm

c)

0.58 m

d)

580 cm

e)

58 m

1)
2)
3)
4)
5)
13.

To do each conversion, you would move the DECIMAL POINT...

a)

How do you convert 50 cm into mm?

1.

ONE place to the RIGHT

b)

How do you convert 5 cm into m?

2.

TWO places to the LEFT

c)

How do you convert 500 mm into m?

3.

THREE places to the LEFT

d)

How do you convert 5 m into cm?

4.

TWO places to the RIGHT

14.

7,000 g = ____ kg

a)

70

b)

700

c)

7

d)

0.07

15.
How many sig figs are there?
100.00
a)
1
b)
3
c)
4
d)
5
16.
How many sig figs are there?
100000000
a)
1
b)
9
c)
10
17.
How many sig figs are there?
4004
a)
1
b)
2
c)
3
d)
4
18.
How many sig figs are there?
9009.00
a)
2
b)
4
c)
5
d)
6
19.
How many sig figs are there?
9009.00
a)
2
b)
4
c)
5
d)
6
20.
How many sig figs are there?
0.00400
a)
1
b)
3
c)
5
d)
6
21.
What is 98.907 rounded to 1 significant figure?
a)
98.9
b)
90
c)
100
d)
1x102
22.
Round 1289 to three significant figures
a)
1290
b)
130
c)
1300
d)
1.29x103
23.
Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.
a)
1.0 m2
b)
1.1 m2
c)
1.0947 m2
d)
1.095 m2
24.
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
25.
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
26.
How would you write 0.0005 in scientific notation?
a)
50 x 105
b)
5 x 104
c)
5 x 103
d)
.5 x 103
27.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
28.
The rule of scientific notation is to write all exponents with a base of ____.
a)
50
b)
5
c)
100
d)
10
29.
How do you write
1001
in scientific notation?
a)
1.0001 x 104
b)
1.01 x 105
c)
1.001 x 103
d)
10.1 x 103
30.
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
31.

Express the following in standard notation:

8.025 x 10-8

a)

.00000008025

b)

.000000008025

c)

802,500,000,000

d)

80,250,000,000

32.

Express the following in standard notation:

8.025 x 10-8

a)

.00000008025

b)

.000000008025

c)

802,500,000,000

d)

80,250,000,000

33.
Which one of these is in scientific notation?
a)
8.987000
b)
8.98 x 106
c)
80.987 x 10
d)
8.986
34.
Write 9.8 x 10-5 in standard form
a)
0.00098
b)
0.000098
c)
.098
d)
98,000
35.
Write 3.41 x 106 in standard form
a)
341
b)
34,100,000
c)
.0000341
d)
3,410,000
36.
Write 0.000972 in scientific notation.
a)
9.72 x 10-4
b)
9.72 x 10-3
c)
972 x 10-4
d)
9.72 x 104
37.
Which of the following numbers is the SMALLEST?
a)
8.7 x 103
b)
3 x 104
c)
1.3 x 108
d)
9 x 102
38.
Multiply:
(1.4 x 105)(2 x 107)
a)
2.8 x 1035
b)
2.4 x 1012
c)
2.8 x 1012
39.

Divide:

5.2 x 1011 ÷ 2 x 105

a)

3.2 x 106

b)

2.6 x 106

c)

2.6 x 1016

40.
What is the simplified version of
a)
3.9 x 106
b)
4 x 1020
c)
4 x 106
d)
3.9 x 1020
41.
(2.3 x 102)+(4.1 x 102)=
a)
6.4 x 104
b)
6.4 x 102
c)
6.4 x 100
d)
.64 x 101
42.
Write the answer in scientific notation.
4.1 x 105 +   5.5 x 106  =
a)
5.91 x 106
b)
9.6 x 105
c)
9.6 x 1011
d)
4.65 x 105
43.
Subtract the within the scientific notation. 
(2 x 10³) - (1.9 x 10²)
a)
1.81 x 10⁵
b)
1.81 x 10³
c)
1.81 x 10⁶
d)
1.81 x 10⁴

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