51 to the nearest tens is 50.
50
Yes, when rounding 51 to the nearest hundred, you look at the tens digit, which is 5. Since 51 is closer to 0 than to 100, it rounds down to 0. Therefore, 51 rounded to the nearest hundred is 0.
58 to the nearest tens is 60.
85 to the nearest tens is 90.
46,434,482 to the nearest tens = 46,434,480
50
50
58 to the nearest tens is 60.
350
100
429 to the nearest tens = 430
82 to the nearest tens = 80
145 to the nearest tens = 150
248 to the nearest tens is 250
4,368,498 to the nearest tens = 4,368,500
392 to the nearest tens = 390
3,589.996 to the nearest tens is 3,590