634 is near the following multiples of 10: 620 630 and 640. Rounding, the nearest is 630.
640
630
600
600
The closest multiple of 10 to 10 is 10.
That depends on what you are rounding to. 8.6 rounded to the nearest tenth (or less) is 8.6; to the nearest integer is 9; to the nearest multiple of 10 is 10; to the nearest multiple of 100 (or more) is 0.
600
5210
because 199 rounded to the nearest 10 is 200, so 199 to the nearest 100 is 200.. Because 200 is both a multiple of 10 and 100.
15.8
Give me some help on this
63.4
40