Question

Give the number of significant figures in this number: 40.00

Answer 1

Answer:

4

Explanation:

because the follow digits are part of the answer even though they are following a decimal

Answer 2

A significant figure is every symbol that made the number itself.

In this case, the number 40.00 has four figures but only two of them are significant 40, this is because you haven't got any more decimals than the first zero.

If you have a case with zeros in front, you take to the first non zero digits.

For example, 0.071004 you wold express as 0.071 and those 7, and 1 are the significant ones.