Question

Mars has a mass of 642,000,000,000,000,000,000,000 kg. How would

scientists express this number in scientific notation?

Answer 1

= 6.42 × 10²²

(scientific notation)

= 6.42e22

(scientific e notation)

= 64.2 × 10²¹

(engineering notation)

(sextillion; prefix zetta- (Z))

= 64200000000000000000000

(real number)