Answer
a) 1
b) 2
c) 3
d) 3
e) 2
f) 3
g) 3
h) 4
Work Step by Step
a) 100 has 1 nonzero digit, therefore it has 1 sig fig
b) 1.0 has 1 nonzero digit and 1 trailing zero with a decimal, therefore it has 2 significant figures
c) 1.00 has 1 nonzero digit and 2 trailing zeros with a decimal point, therefore it has 3 sig figs
d) 100. has 1 nonzero digit and 2 trailing zeros with a decimal point, therefore it has 3 sig figs
e) 0.0048 has 2 nonzero digits, therefore it has 2 sig figs
f) 0.00480 has 2 nonzero digits and 1 trailing zero with a decimal point, therefore it has 3 sig figs
g) 4.80 has 2 nonzero digits and 1 trailing zero with a decimal point, therefore it has 3 sig figs
h) 4.800 has 2 nonzero digits and 2 trailing zeros with a decimal point, therefore it has 4 sig figs
