Answers are:
3.07 × 10^4 = 30,700.
3.07 × 10^-4 = 0.000307.
3.07 × 10^-6 = 0.00000307.
3.07 × 10^6 = 3,070,000.
1) 10^4 = 10 × 10 × 10 × 10.
10^4 = 10,000.
3.07 × 10^4 = 3.07 × 10,000.
3.07 × 10^4 = 30,700.
2) 10^-4 = 1 ÷ (10 × 10 × 10 × 10).
10^-4 = 1 ÷ 10,000.
10^-4 = 0.0001.
3.07 × 10^-4 = 3.07 × 0.0001.
3.07 × 10^-4 = 0.000307.
3) 10^-6 = 1 ÷ (10 × 10 × 10 × 10 × 10 × 10).
10^-6 = 1 ÷ 1,000,000.
10^-6 = 0.000001.
3.07 × 10^-6 = 3.07 × 0.000001.
3.07 × 10^-6 = 0.00000307.
4) 10^6 = 10 × 10 × 10 × 10 × 10 × 10.
10^6 = 1,000,000.
3.07 × 10^6 = 3.07 × 1,000,000.
3.07 × 10^6 = 3,070,000.