8.4
840
It ends with a 2, so it must be rounded down to 840.
840
It is already rounded to the nearest ten as 840
842 to the nearest 1000 is 1000. When rounding to the nearest 1000, we look at the hundreds place of the number in question. Since the hundreds place in 842 is less than 500, we round down to the nearest 1000, which is 1000.
145
The factors of 842 are: 1, 2, 421, 842
It is: 700 because 40 is less than 50
842.
140.3333
There are 84.2 tens in 842.