200 035 0.0000300
2.0000300
0.002
4.44 x 103
2.0 x 10-2
10.00
10
102 000

Rules Used
(1, 2, 3, 4, and/or 5)

Rule 1: Nonzero digits—1, 2, 3, 4, 5, 6, 7, 8, and 9—are significant.

Rule 2: Final zeros to the right of the decimal point are significant.

Rule 3: Zeros between two significant digits are significant.

Rule 4: Zeros used for spacing the decimal point are not significant.

Rule 5: For numbers in scientific notation, all of the digits before “x 10x” are
significant.