Question

Indicate the number of significant figures for the following: 1) 300 000 m
2) 5.03 x 101cm
3) 5.6.3 7 dogs

Answer 1

Answer:

According to the significant figure rules:

1- A non=zero digit is always soignificant.

Therefore the number 300,000 has only 1 significant figure.

2-  Zero is significant when it is between two non-zero digits

Thus the number  5.03 x 101cm  has three significant figures. As the 0 between 2 and 3 is significant

3- A non- zero digit is significant thus  5.6.3 7 has 4 significant figures.