SIGNIFICANT FIGURES

1. Express the following numbers in scientific notation:

A) 123,876.3 B) 1,236,840 C) 422000

D) 0.000238 E) 0.00021100

2. Give the number of significant digits in each of the following measurements:

A). 2487.50 m B.) 4.006 L C). 54.020 mi D.) 4.6 x 10⁵ m

E.) 240 000 cm F.) 412.012 kg G.) 0.721 lb H.) 4.06 x 10^-5 m