Cindy wants to send a card and a framed picture in a package. Which is the best estimate for the mass of this package?
a. 450 grams
b. 450 kilograms
c. 4 grams
d. 40 kilograms
A card and a framed picture cannot cost 450 kilograms or even 40 kilograms. A card itself might weight 4 grams, but combined with a frame picture it is definitely approximately 450 grams of a package.