Browse · harp Print → jmc prealgebra junior Problem Two hundred thousand times two hundred thousand equals (A) four hundred thousand (B) four million (C) forty thousand (D) four hundred million (E) forty billion Solution — click to reveal Writing the numbers in scientific notation, we have (2×105)×(2×105)=4×1010=40×109=forty billion→forty billion. Final answer E ← Previous problem Next problem →