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Significant Figures

Total questions: 21

Worksheet time: 12mins

Name
Class
Date
1.

How many significant figures are there in 0.0054 grams?

a)

1

b)

2

c)

3

d)

4

2.

How many significant figures are there in 0.020 meters?

a)

1

b)

2

c)

3

d)

4

3.

How many significant figures are there in 10.020 moles?

a)

2

b)

3

c)

4

d)

5

4.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
5.
How many significant figures: 0.012 km
a)
1
b)
2
c)
3
d)
4
6.
How many significant figures: 0.001 g
a)
4
b)
3
c)
2
d)
1
7.
How many sig figs are there?
0.000008
a)
1
b)
2
c)
6
d)
7
8.

1.61 grams + 100 grams = ?

a)

101.61 g

b)

101 g

c)

1.61 x 102 g

d)

100 g

9.
Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.
a)
1.0 m2
b)
1.1 m2
c)
1.0947 m2
d)
1.09 m2
10.
Calculate 12.34 + 1.234 + 0.1234
a)
13.6974
b)
13.697
c)
13.70
d)
13.7
11.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
12.

How many significant figures are there in 0.0054 grams?

a)

1

b)

2

c)

3

d)

4

13.

Khaled says 553 rounds to 600 and Ahmad says 553 rounds to 550. Who is the correct if they are rounding for two significant figures?

a)

Ahmad

b)

Ali

c)

Both

d)

None

14.

Round 0.3897 to one significant figure.

a)

0.3

b)

0.4

c)

0

d)

1

15.
Calculate 12.34 + 1.234 + 0.1234
a)
13.6974
b)
13.697
c)
13.70
d)
13.7
16.
Calculate 12.34 × 1.234 × 0.1234
a)
1.87908
b)
1.879
c)
1.9
d)
1.8790809
17.

Solve & Round to Correct Sig Figs.

100 / 2.0 =

a)

a. 50

b)

b. 50.

c)

c.50.00

d)

d. 50.0

18.

Round the number 4.0294894 to the nearest .01

a)

4.02

b)

4.01

c)

4.03

d)

4.029

19.

TRUE/FALSE

Numbers in scientific notation are all significant

a)

True

b)

False

20.

TRUE/FALSE

Zeros between non-zero numbers are not significant

a)

True

b)

False

21.

TRUE/FALSE

Non-zero digits are always significant

a)

True

b)

False