CAN SOMEONE PLEASE HELP I REALLY DON'T UNDERSTAND
PLEASE NO FAKE ANSWERS
Rachel has three different samples of rare Earth metals. The first sample has a mass of 5.5*10^-3 grams, the second has a mass of 1.4 grams, and the third has a mass of 4.4*10^-2 grams. Ignoring significant figures, what is the sum of these three masses?