The answer depends on the degree to which the number needs to be rounded.
Not enough information. You also need to specify HOW you want it rounded - for example, to the nearest unit, to the nearest multiple of 10, of 100, etc.
To the nearest fifty, 50
40
To the nearest whole number, 40
the answers is 40
When you round off 42 754 to the nearest thousands, you will have 40 000, and to ten thousands, you get 0.
40
40
if you round off to the nearest one then its 41, if you round off to the nearest ten, it is 40.
40
To the nearest whole number, 40
the answers is 40
It is: 40 because 3 is less than 5
36 to the nearest tens is 40
It is: 4000 because 40*100 = 4000
100
To the nearest ten, 40 To the nearest one, 39 To the nearest tenth, 39.1
When you round off 42 754 to the nearest thousands, you will have 40 000, and to ten thousands, you get 0.
40