Which of the following is not a true statement? (1 point)
1.) 4 × 10^8 is 100 times as great as 4 × 10^6
2.) 2 × 10^6 is 10 times as great as 2 × 10^5
3.) 7 × 10 ^−2 is 1,000 times as great as 7 × 10^−6
4.) 9 × 10^−4 is 1,000 times as great as 9 × 10^−7