How many significant figures are in the number 720?

1.   ?    1
2.   ?    2
3.   ?    3
4.   ?    4

How many significant figures are in the number 8.4 X 10³?

1.   ?    1
2.   ?    2
3.   ?    4
4.   ?    5

How many significant figures are in the number 20.003?

1.   ?    2
2.   ?    3
3.   ?    4
4.   ?    5

How many significant figures are in the number 0.00300?

1.   ?    1
2.   ?    2
3.   ?    3
4.   ?    5

Complete the following calculation using the proper number of significant figures:

6 X 6

1.   ?    3
2.   ?    4
3.   ?    36
4.   ?    40

Complete the following calculation using the proper number of significant figures:

2.34 - 1.293

1.   ?    1
2.   ?    1.0
3.   ?    1.05
4.   ?    1.047

Complete the following calculation using the proper number of significant figures:

10.37 - 4

1.   ?    6
2.   ?    6.4
3.   ?    6.37

Complete the following calculation using the proper number of significant figures:

12.47 / 3.2

1.   ?    4
2.   ?    3.9
3.   ?    3.90
4.   ?    3.897

Complete the following calculation using the proper number of significant figures:

(8.41 X 2.873) + 4.77

1.   ?    29.0
2.   ?    28.97
3.   ?    28.9
4.   ?    28.93

If you have to divide 3.77 kg of sugar among three people, how much sugar will each person get? (Hint: Look for absolute numbers)

1.   ?    1
2.   ?    1.3
3.   ?    1.26
4.   ?    1.257