Respuesta :
Answer:
Standard form is writing numbers down easily. So we can do this we need to take 6.43999001 and times that by 10^8
The trick too doing this is taking the decimal point and moving it 8 places to the right.
Your answer in standard form would be 643,999,001
Answer:
6.43999001*10^8= 643999001
just move the decimal to the right 8 times
Step-by-step explanation: