51 to the nearest tens is 50.
50
50
58 to the nearest tens is 60.
350
100
85 to the nearest tens is 90.
46,434,482 to the nearest tens = 46,434,480
3,589.996 to the nearest tens is 3,590
429 to the nearest tens = 430
82 to the nearest tens = 80
4,368,498 to the nearest tens = 4,368,500
248 to the nearest tens is 250