# Math Scientific Notation

posted by
**marko**
.

write the scientific notation

1) for 25,000,000

i got: 2.5 x 10^7

2) 4,562,000,000

i got: 4.562 x 10^9

3) 1,250 x 10^5

im stuck on this one

i think its: 1.25 x 10 ^ 8

are these right?