Answer:
4400 is the answer
Step-by-step explanation: You move the decimal point to the right 3 spaces. If it was 10^-3 you would move the decimal point to the left 3 spaces.
The most accurate "estimation" for 5+4 is um... 9
No one should talk badly about anyones religion or do something bad with religion thats just disrespectful everyone has there own beliefs no one should judge