Scientific notation please help 1 through 9 I will mark you the brainly!

Answer:
1. 7,230,000
2. -8,120
3. 45.21
4. 61,240,000
5. 8,470
6. 956,300
7. 1,250,000,000
8. 63,330
9. 455,000
Its been a while since I learned this so Im really hoping that I remembered it correctly.