Answer:
The answer is 8000
Step-by-step explanation:
In 8078 the place value of 8 is thousand and to round to the nearest thousand you must look for the the number with place value thousand and if the number to the right is 5 or more then you add 1 to the number with place value thousand then change the other number(s) to zero(s).
In this case the number to the right of 8 is 0 so you add nothing to 8 = 8000
