Question

16. Which number has the greater value,
7 x 10-9 or 6 x 10-4?

Answer 1

7 x 10-9

Explanation:

(7x10) (6 x 10)

70-9 60-4

61 56

Answer 2

in any case, the amount of zeros is more important than the significant digits. since 7X10-9 has a smaller exponent above the 10 than 6X10-4, it is safe to say 6X10-4 is the larger number